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Simplifying 5m + -21 = -2m Reorder the terms: -21 + 5m = -2m Solving -21 + 5m = -2m Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '2m' to each side of the equation. -21 + 5m + 2m = -2m + 2m Combine like terms: 5m + 2m = 7m -21 + 7m = -2m + 2m Combine like terms: -2m + 2m = 0 -21 + 7m = 0 Add '21' to each side of the equation. -21 + 21 + 7m = 0 + 21 Combine like terms: -21 + 21 = 0 0 + 7m = 0 + 21 7m = 0 + 21 Combine like terms: 0 + 21 = 21 7m = 21 Divide each side by '7'. m = 3 Simplifying m = 3
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