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Simplifying 20 + 28m = 42 + 21m Solving 20 + 28m = 42 + 21m Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-21m' to each side of the equation. 20 + 28m + -21m = 42 + 21m + -21m Combine like terms: 28m + -21m = 7m 20 + 7m = 42 + 21m + -21m Combine like terms: 21m + -21m = 0 20 + 7m = 42 + 0 20 + 7m = 42 Add '-20' to each side of the equation. 20 + -20 + 7m = 42 + -20 Combine like terms: 20 + -20 = 0 0 + 7m = 42 + -20 7m = 42 + -20 Combine like terms: 42 + -20 = 22 7m = 22 Divide each side by '7'. m = 3.142857143 Simplifying m = 3.142857143
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