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Simplifying 31 + 8r = 4(2r + 7) + 3 Reorder the terms: 31 + 8r = 4(7 + 2r) + 3 31 + 8r = (7 * 4 + 2r * 4) + 3 31 + 8r = (28 + 8r) + 3 Reorder the terms: 31 + 8r = 28 + 3 + 8r Combine like terms: 28 + 3 = 31 31 + 8r = 31 + 8r Add '-31' to each side of the equation. 31 + -31 + 8r = 31 + -31 + 8r Combine like terms: 31 + -31 = 0 0 + 8r = 31 + -31 + 8r 8r = 31 + -31 + 8r Combine like terms: 31 + -31 = 0 8r = 0 + 8r 8r = 8r Add '-8r' to each side of the equation. 8r + -8r = 8r + -8r Combine like terms: 8r + -8r = 0 0 = 8r + -8r Combine like terms: 8r + -8r = 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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