Answer:
x = 57
Explanation:
1. 5 = x/3 + 3(-14)/3
2. 5 = x + 3 (-14)/3
3. 5 = x -42/3
4. 3 x 5 = 3 x x-42/3
5. 3 x 5 = x-42
6. 15 = x-42
7. 15 + 42 = x - 42 + 42
8. 57 = x - 42 + 42
9. 57 = x
10. x = 57
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