Question

Solve the following pair of equations by elimination method.

3x + 4y = 7 , x+ y = 1

Answer 1

3 x + 4 y = 7 (1)

x+ y = 1 (2)

Equation (2) x 3

3 x + 3 y = 3 (3)

Equation (1) – (3) gives y = 4

And x= -3