Question

Which equation has solution x = -3?

A) 2x - 7 = -1
B) 3x + 8 = 1
C)
1
2
x + 8 = 10
Eliminate
D)
1
2
(2x - 6) = -6

Answer 1

You can pick B or D there both right

Answer 2

a)2·(-3)-7=-1
-6-7=-1
-13=-1
b)-9+8=1
1=1
c)1+8=10
9=10

2+8=10
10=10
d)
2-6=-6
-4=-6

-2=-6