Question

Find the x+y=10 2x+y=20 By elimination method

Answer 1

Answer:

Given :

x + y = 10 .....equ(1)

2x + y = 20 ......equ(2)

In elimination method we have to eliminate one of the variable x or y

subtract equ(1) from equ(2)

» 2x + y - (x + y) = 20 - 10

» 2x + y - x -y = 10

» x = 10

substitute value in equ(1)

x + y = 10

» 10 + y = 10

» y = 0