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Simplifying 4.2m + -7 = 3.3(m + 2.1) Reorder the terms: -7 + 4.2m = 3.3(m + 2.1) Reorder the terms: -7 + 4.2m = 3.3(2.1 + m) -7 + 4.2m = (2.1 * 3.3 + m * 3.3) -7 + 4.2m = (6.93 + 3.3m) Solving -7 + 4.2m = 6.93 + 3.3m Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-3.3m' to each side of the equation. -7 + 4.2m + -3.3m = 6.93 + 3.3m + -3.3m Combine like terms: 4.2m + -3.3m = 0.9m -7 + 0.9m = 6.93 + 3.3m + -3.3m Combine like terms: 3.3m + -3.3m = 0.0 -7 + 0.9m = 6.93 + 0.0 -7 + 0.9m = 6.93 Add '7' to each side of the equation. -7 + 7 + 0.9m = 6.93 + 7 Combine like terms: -7 + 7 = 0 0 + 0.9m = 6.93 + 7 0.9m = 6.93 + 7 Combine like terms: 6.93 + 7 = 13.93 0.9m = 13.93 Divide each side by '0.9'. m = 15.47777778 Simplifying m = 15.47777778
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