This is the choices
88
70
110
120

110

Step-by-step explanation:

Y and X have to equal 180

70+x+180

=110

given the equation is 8+9z=-6, the first step would be to subtract the 8 from both sides:

8+9z-8=-6-8

since 8 minus 8 = 0, this would cancel out the 8. and since -6 minus 8 equals -14, the equation would look like this

9z = -14