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Simplifying 2r + -8 = 2(r + -4) Reorder the terms: -8 + 2r = 2(r + -4) Reorder the terms: -8 + 2r = 2(-4 + r) -8 + 2r = (-4 * 2 + r * 2) -8 + 2r = (-8 + 2r) Add '8' to each side of the equation. -8 + 8 + 2r = -8 + 8 + 2r Combine like terms: -8 + 8 = 0 0 + 2r = -8 + 8 + 2r 2r = -8 + 8 + 2r Combine like terms: -8 + 8 = 0 2r = 0 + 2r 2r = 2r Add '-2r' to each side of the equation. 2r + -2r = 2r + -2r Combine like terms: 2r + -2r = 0 0 = 2r + -2r Combine like terms: 2r + -2r = 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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