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