Question

Solve 2x + y = 7
x – y = –4

a. (1, 5)

b. (–1, 5)

c. (1, –5)

d. (–1, –5)

Answer 1

its a

Answer 2

2x+y=7
y=7-2x out this y value in x-y=-4 and solve for x
x-7+2x=-4
3x=-4+7
x=3
plug this x value in x-y=-4
1-y=-4
-y=-4-1
-y=-5
y=5
(1,5)

Answer 3

Thanks you very much for your help :)

Answer 4

welcome!!