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Answer:

Explanation:
→ We want to solve this equation:

◼ Subtract 20 from both sides:

◼ Simplify both sides:

◼ Add 10x to both sides:

◼ Simplify both sides:

◼ Divide both sides by -2:

◼ Simplify both sides:

Conclusion:
The solution of the equation 12x + 20 = -10x + 32 is -6.