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Simplifying 3r + -8 = 2(r + -4) + r Reorder the terms: -8 + 3r = 2(r + -4) + r Reorder the terms: -8 + 3r = 2(-4 + r) + r -8 + 3r = (-4 * 2 + r * 2) + r -8 + 3r = (-8 + 2r) + r Combine like terms: 2r + r = 3r -8 + 3r = -8 + 3r Add '8' to each side of the equation. -8 + 8 + 3r = -8 + 8 + 3r Combine like terms: -8 + 8 = 0 0 + 3r = -8 + 8 + 3r 3r = -8 + 8 + 3r Combine like terms: -8 + 8 = 0 3r = 0 + 3r 3r = 3r Add '-3r' to each side of the equation. 3r + -3r = 3r + -3r Combine like terms: 3r + -3r = 0 0 = 3r + -3r Combine like terms: 3r + -3r = 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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