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Simplifying -7(3m + -7) = -7(3m + 4) Reorder the terms: -7(-7 + 3m) = -7(3m + 4) (-7 * -7 + 3m * -7) = -7(3m + 4) (49 + -21m) = -7(3m + 4) Reorder the terms: 49 + -21m = -7(4 + 3m) 49 + -21m = (4 * -7 + 3m * -7) 49 + -21m = (-28 + -21m) Add '21m' to each side of the equation. 49 + -21m + 21m = -28 + -21m + 21m Combine like terms: -21m + 21m = 0 49 + 0 = -28 + -21m + 21m 49 = -28 + -21m + 21m Combine like terms: -21m + 21m = 0 49 = -28 + 0 49 = -28 Solving 49 = -28 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
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