Question

2x-y=5 ; 3x+2y=11 Solve the simultaneous equation.

Answer 1

Hello!!

Here is your answer!

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2x - y = 5 ( 1 )


3x + 2y = 11 ( 2)



From ( 1 )

y = 2x - 5 ( 3 )

Substituting the value in ( 2 )


3x + 2 ( 2x - 5 ) = 11

3x + 4x - 10 = 11

7x = 21

x = 3

Hence the value of y ( Substitute in ( 3 ) )


y = 6 - 5 = 1


Hope it helps

Answer 2

Solution :

Given simultaneous equations

are ,

2x - y = 5

=> 2x - 5 = y

y = 2x - 5 -----( 1 )

3x + 2y = 11 ----( 2 )

Substitute y = 2x - 5 in equation

( 2 ) , we get

3x + 2(2x- 5 ) = 11

=> 3x + 4x - 10 = 11

=> 7x = 11 + 10

=> 7x = 21

=> x = 21/7

x = 3

Substitute x = 3 in equation ( 1 ),

We get ,

y = 2×3 - 5

=> y = 6 - 5 = 1

Therefore ,

x = 3 , y = 1

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