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Simplifying 7 + 4r = -2(-2r + -6) Reorder the terms: 7 + 4r = -2(-6 + -2r) 7 + 4r = (-6 * -2 + -2r * -2) 7 + 4r = (12 + 4r) Add '-4r' to each side of the equation. 7 + 4r + -4r = 12 + 4r + -4r Combine like terms: 4r + -4r = 0 7 + 0 = 12 + 4r + -4r 7 = 12 + 4r + -4r Combine like terms: 4r + -4r = 0 7 = 12 + 0 7 = 12 Solving 7 = 12 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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