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Simplifying 84 = -2m + -4(-4m + 7) Reorder the terms: 84 = -2m + -4(7 + -4m) 84 = -2m + (7 * -4 + -4m * -4) 84 = -2m + (-28 + 16m) Reorder the terms: 84 = -28 + -2m + 16m Combine like terms: -2m + 16m = 14m 84 = -28 + 14m Solving 84 = -28 + 14m Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-14m' to each side of the equation. 84 + -14m = -28 + 14m + -14m Combine like terms: 14m + -14m = 0 84 + -14m = -28 + 0 84 + -14m = -28 Add '-84' to each side of the equation. 84 + -84 + -14m = -28 + -84 Combine like terms: 84 + -84 = 0 0 + -14m = -28 + -84 -14m = -28 + -84 Combine like terms: -28 + -84 = -112 -14m = -112 Divide each side by '-14'. m = 8 Simplifying m = 8
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