Question

2 X + Y is equal to 5, 3 x minus Y is equal to 5 by substitutional method

Answer 1

Given ,

2x + y = 5

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

3x - y = 5 ---( 2 )

Substitute ( 1 ) in equation ( 2 ) , we get

3x - ( 5 - 2x ) = 5

=> 3x - 5 + 2x = 5

=> 5x - 5 = 5

=> 5x = 5 + 5

=> 5x = 10

=> x = 10/5

=> x = 2

Now , put x = 2 in Equation ( 1 ), we get

y = 5 - 2 × 2

=> y = 5 -4

=> y = 1

Therefore ,

x = 2 , y = 1

•••••

Answer 2

hope it helps you....