Question

Solve 3x+y+1=0 and 2x-3y+8=0 by elimination method

Answer 1

By elimination method,

3(3x + y + 1) = 0
9x + 3y + 3 = 0 ......(1)

2x - 3y + 8 = 0 .......(2)

Using equation 1 and 2 we get

11x = -11
x = -1

3x + y + 1 = 0
-3 + y + 1 = 0
y = 2