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Simplifying 20 = -7 + -3x Solving 20 = -7 + -3x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3x' to each side of the equation. 20 + 3x = -7 + -3x + 3x Combine like terms: -3x + 3x = 0 20 + 3x = -7 + 0 20 + 3x = -7 Add '-20' to each side of the equation. 20 + -20 + 3x = -7 + -20 Combine like terms: 20 + -20 = 0 0 + 3x = -7 + -20 3x = -7 + -20 Combine like terms: -7 + -20 = -27 3x = -27 Divide each side by '3'. x = -9 Simplifying x = -9
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