1. -2v-7=-23

A: 15
B: 8
C:-8
D:-15

2.) x\3 -10=-12
A:-6
B:-66
C:6
D:66

3.) x\5+6=10
A:44
B:30
C:20
D:-20

2 answers

Someone will check your answers.
for these, the first step is to get all the x stuff on the left by itself by adding or subtracting. Then multiply or divide by x's coefficient so that you are left with just x:

x/5+6=10
subtract 6: x/5 = 4
multiply by 5: x = 4*5 = 20