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Simplifying 4(r + 1) = 6 + -2(1 + -2r) Reorder the terms: 4(1 + r) = 6 + -2(1 + -2r) (1 * 4 + r * 4) = 6 + -2(1 + -2r) (4 + 4r) = 6 + -2(1 + -2r) 4 + 4r = 6 + (1 * -2 + -2r * -2) 4 + 4r = 6 + (-2 + 4r) Combine like terms: 6 + -2 = 4 4 + 4r = 4 + 4r Add '-4' to each side of the equation. 4 + -4 + 4r = 4 + -4 + 4r Combine like terms: 4 + -4 = 0 0 + 4r = 4 + -4 + 4r 4r = 4 + -4 + 4r Combine like terms: 4 + -4 = 0 4r = 0 + 4r 4r = 4r Add '-4r' to each side of the equation. 4r + -4r = 4r + -4r Combine like terms: 4r + -4r = 0 0 = 4r + -4r Combine like terms: 4r + -4r = 0 0 = 0 Solving 0 = 0 Couldn't find a variable to solve for. This equation is an identity, all real numbers are solutions.
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