Help..cross multiplication method..if u know

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roshni mittal

@-wild-

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+ 5

Posted: 14 years ago

#11

ohhhkkk...but nik still can u tell me the method by using any example

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aila

@-aaila-

Inactive

Posted: 14 years ago

#12

@sorry salina light chaali gayii thi...

salina this question has no solution

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notoriousniks

@notoriousniks

Explorer

Posted: 14 years ago

#13

Originally posted by: salinashah
see niks i will give u question of this ok..

the following pairs of linear equation has unique solution , no solution,infinitely solution.In case there is a unique solution.find it by using cross multiplication...

x-3y-3=0
3x-9y-2=0

x-3y=3

okey second eq become

Let's consider the general form of a pair of linear equations.
solution to pair of linear equations, algebraic methods, Elimination method

, and

. Recall that when

divided by

is not equal to

divided by

, the pair of linear equations will have a unique solution.
To solve this pair of equations for

and

using cross-multiplication, we'll arrange the variables

and

and their coefficients

and

, and the constants

and

as shown below
solution to pair of linear equations, algebraic methods, Cross - multiplication method

non linear equations, solving non-linear equations , solution of non-linear equations

We can convert non linear equations in to linear equation by a suitable substitution. Then solve those equations using any one of the above three methods.

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roshni mittal

@-wild-

Inactive

+ 5

Posted: 14 years ago

#14

Originally posted by: -aila-

@sorry salina light chaali gayii thi...

salina this question has no solution

ohh its ok sweety😃

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aila

@-aaila-

Inactive

Posted: 14 years ago

#15

@salina nik is giving u right method solve this according to this method ur question will be solved

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roshni mittal

@-wild-

Inactive

+ 5

Posted: 14 years ago

#16

Originally posted by: notoriousniks
x-3y=3
okey second eq become

Let's consider the general form of a pair of linear equations.
, and. Recall that when divided by is not equal to divided by , the pair of linear equations will have a unique solution.
To solve this pair of equations for and using cross-multiplication, we'll arrange the variables and and their coefficients , , and , and the constants and as shown below

We can convert non linear equations in to linear equation by a suitable substitution. Then solve those equations using any one of the above three methods.

ohh thank u s sooo much nik ...its definetly right thnx alot

niki and aila guys thank u so much u tooo

love u alottt

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notoriousniks

@notoriousniks

Explorer

Posted: 14 years ago

#17

Originally posted by: salinashah
ohh thank u s sooo much nik ...its definetly right thnx alot

niki and aila guys thank u so much u tooo

love u alottt

x=7/2 and y = infinite aa raha dekho tumhar eq right hai yaa nahi answer nahi aa raha hai

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roshni mittal

@-wild-

Inactive

+ 5

Posted: 14 years ago

#18

Originally posted by: niki.5

yea sweetie took ur example only but change the signs x+3y-3=0

3x-9y-2=0

now the next step is x+3y=3...(1 Equation)

3x-9y=2...(2 Equation)

now make two terms equal whether the y one or x one like

i multiply first equation with 3 so it becomes

3x+9y=9...(3 Equation)

now solve them by adding or subtracting so that one term canceled like i will subtract 2 equation from 3 equation

3x+9y=9

3x-9y=2

change the sign of equation 2 it becomes

3x+9y=9

3x-9y=2

- + -

_________

18y=7

y=7/18

and u can find x value too by putting y's value in any equation

ok hope u understand