Question

Guys Please help me ASAP....also I need to know how you find the answer so I don't have to ask anymore questions.

1.Solve: 3d + 8d = 7.7 d = _____

2.Solve: 4h + 2h = 0.72 h = _____

3.Solve: 64.8 = 6k + 2k k = _____

4.Solve: 14.4 = 7n + 2n n = _____

5.Solve: 2x + 10x = 39 x = _____

Answer 1

1. d= -0.1
2.h= 0.12
3.k= 8.1
4.n= 1.6
5.x= 13/4