Respuesta :

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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: