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 = _____
