Question

Solve the simultaneous equations. 3x-4y=15; x+y= -2

Answer 1

Answer: x+y=-2 , 3x-4y=15

x=-2-y

3(-2-y)-4y=15

-6-3y-4y=15

-6-7y=15

-7y=15+6

-7y=21

y= 21/7

y=3

x=-2-y

x=-2-3

x=-5

Step-by-step explanation: