Question

Solve x+2y=-1 ,2x-3y=12 by method of substitution ?​

Answer 1

x+2y=-1

x=-1-2y

putting the value of x in equation 2

2×(-1-2y)-3y=12

-2-4y-3y=12

-2-7y=12

-7y=12+2

y=14/-7

y=-2