X = 2 y − 4
7 x + 5y = −66

x = -8

y = -2

Step-by-step explanation:

The variable x in this system of equations is already isolated. Therefore, we can substitute it into the other equation and solve for y.

7(2y - 4) + 5y = -66

14y - 28 + 5y = -66

19y = -66 + 28

y = -2

Then we solve for x

x = 2(-2) - 4

x = -8

answer 1 : option "c"

answer 2 : option "d"

answer 3 : option "b"

answer 4 : option "d"

answer 5 : option "b"

answer 6 : option "a"

answer 7 : option "c"

answer 8 : option "d"

answer 9 : option "c"

answer 10 : option "d"

answer 11 : option "c"

answer 12 option "b"

answer 13 option "c"

answer 14 option "c"

answer 15 option "d"

answer 16 option "a"

answer 17 option "b"

answer 18 option "c"

answer 19 option "a"

answer 20 option "a"

answer 21 option "c"

d