Does any1 the answers for these two

The first one is x=4 and the second one is x=-1

Step-by-step explanation:

1.) add 5 to both sides then, subtract 2x to both sides then you get

5x=20. divide 5 to both side then you get x=4

2.) Subtract 4x to both sides then you add 8 to both sides then you get

x=-1.

12cm

the answer is d