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Simplifying 21 = 2.8m Solving 21 = 2.8m Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-2.8m' to each side of the equation. 21 + -2.8m = 2.8m + -2.8m Combine like terms: 2.8m + -2.8m = 0.0 21 + -2.8m = 0.0 Add '-21' to each side of the equation. 21 + -21 + -2.8m = 0.0 + -21 Combine like terms: 21 + -21 = 0 0 + -2.8m = 0.0 + -21 -2.8m = 0.0 + -21 Combine like terms: 0.0 + -21 = -21 -2.8m = -21 Divide each side by '-2.8'. m = 7.5 Simplifying m = 7.5
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