Answer:
1: x + 5=12 -> x=7
2: 7x = 21 -> x=3
3: b - 2/3 = 5/6 -> x=3/2
4: 1/5m = 20 -> 100
5: 45 = 3(x + 1) -> x = 14
6: 22.5 = 1.5x -> x = 15
Step-by-step explanation:
brainly.com/question/12500028
