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Simplifying 7(m + -21) = 3m Reorder the terms: 7(-21 + m) = 3m (-21 * 7 + m * 7) = 3m (-147 + 7m) = 3m Solving -147 + 7m = 3m Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-3m' to each side of the equation. -147 + 7m + -3m = 3m + -3m Combine like terms: 7m + -3m = 4m -147 + 4m = 3m + -3m Combine like terms: 3m + -3m = 0 -147 + 4m = 0 Add '147' to each side of the equation. -147 + 147 + 4m = 0 + 147 Combine like terms: -147 + 147 = 0 0 + 4m = 0 + 147 4m = 0 + 147 Combine like terms: 0 + 147 = 147 4m = 147 Divide each side by '4'. m = 36.75 Simplifying m = 36.75
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