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Simplifying 10(x + 3) + -2 = 21 Reorder the terms: 10(3 + x) + -2 = 21 (3 * 10 + x * 10) + -2 = 21 (30 + 10x) + -2 = 21 Reorder the terms: 30 + -2 + 10x = 21 Combine like terms: 30 + -2 = 28 28 + 10x = 21 Solving 28 + 10x = 21 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-28' to each side of the equation. 28 + -28 + 10x = 21 + -28 Combine like terms: 28 + -28 = 0 0 + 10x = 21 + -28 10x = 21 + -28 Combine like terms: 21 + -28 = -7 10x = -7 Divide each side by '10'. x = -0.7 Simplifying x = -0.7
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