Respuesta :

Step-by-step explanation:

x+y=-12

x-y=-2

solve by simultaneous equations multiply the second equation by -1

-x-y=2

subtract both equations

y=10

x+10=-12

×=-22

Answer:

-7 and -5

Step-by-step explanation:

a + b = -12

a - b = -2

2a = -12 + -2 = -14 ----> a = -7

-7 + b = -12 ---> b = -5