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Simplifying 3(r + -2) + 8 = 3r + 2 Reorder the terms: 3(-2 + r) + 8 = 3r + 2 (-2 * 3 + r * 3) + 8 = 3r + 2 (-6 + 3r) + 8 = 3r + 2 Reorder the terms: -6 + 8 + 3r = 3r + 2 Combine like terms: -6 + 8 = 2 2 + 3r = 3r + 2 Reorder the terms: 2 + 3r = 2 + 3r Add '-2' to each side of the equation. 2 + -2 + 3r = 2 + -2 + 3r Combine like terms: 2 + -2 = 0 0 + 3r = 2 + -2 + 3r 3r = 2 + -2 + 3r Combine like terms: 2 + -2 = 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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