Question

Solve the equation symbolically using the elimination method
12x+2y=12
=12x+3y=-12

Answer 1

You can use:
12x + 2y = 12 *(-1)
12x + 3y= -12

-> -12x-2y=-12
12x+3y=-12

-> 0x+ y = -24
y=-24 and x = ( 12x - 48 = 12 => x=60/12 => x = 5)