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Answer:

Explanation:
We want to solve this equation:

This is a first degree equation. We will isolate x.
▪ First, simplify the left side:


▪ Subtract 24 from both sides:

Simplify:

▪ Finally, divide both sides by 4:

Simplify:

Conclusion:
The solution of the equation -3(x-8) + 7x = 12 is -3.