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Simplifying 7 + -2x + -2 = -3x + 21 Reorder the terms: 7 + -2 + -2x = -3x + 21 Combine like terms: 7 + -2 = 5 5 + -2x = -3x + 21 Reorder the terms: 5 + -2x = 21 + -3x Solving 5 + -2x = 21 + -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. 5 + -2x + 3x = 21 + -3x + 3x Combine like terms: -2x + 3x = 1x 5 + 1x = 21 + -3x + 3x Combine like terms: -3x + 3x = 0 5 + 1x = 21 + 0 5 + 1x = 21 Add '-5' to each side of the equation. 5 + -5 + 1x = 21 + -5 Combine like terms: 5 + -5 = 0 0 + 1x = 21 + -5 1x = 21 + -5 Combine like terms: 21 + -5 = 16 1x = 16 Divide each side by '1'. x = 16 Simplifying x = 16
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