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Simplifying 4(r + 1) = 5 + -2(1 + -2r) Reorder the terms: 4(1 + r) = 5 + -2(1 + -2r) (1 * 4 + r * 4) = 5 + -2(1 + -2r) (4 + 4r) = 5 + -2(1 + -2r) 4 + 4r = 5 + (1 * -2 + -2r * -2) 4 + 4r = 5 + (-2 + 4r) Combine like terms: 5 + -2 = 3 4 + 4r = 3 + 4r Add '-4r' to each side of the equation. 4 + 4r + -4r = 3 + 4r + -4r Combine like terms: 4r + -4r = 0 4 + 0 = 3 + 4r + -4r 4 = 3 + 4r + -4r Combine like terms: 4r + -4r = 0 4 = 3 + 0 4 = 3 Solving 4 = 3 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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