Answer:
3 (5x+7) = 75
15x + 21 = 75
15x + 21 - 21 = 75 - 21
15x = 54
x = 3.6
Step-by-step explanation:
divide both sides by 3
5 x + 7 = 25
subtract 7 from both sides
5 x = 18
divide both sides by 5
