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Simplifying 2(r + -7) = 5r + -14 + -3r Reorder the terms: 2(-7 + r) = 5r + -14 + -3r (-7 * 2 + r * 2) = 5r + -14 + -3r (-14 + 2r) = 5r + -14 + -3r Reorder the terms: -14 + 2r = -14 + 5r + -3r Combine like terms: 5r + -3r = 2r -14 + 2r = -14 + 2r Add '14' to each side of the equation. -14 + 14 + 2r = -14 + 14 + 2r Combine like terms: -14 + 14 = 0 0 + 2r = -14 + 14 + 2r 2r = -14 + 14 + 2r Combine like terms: -14 + 14 = 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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