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Simplifying 45 + -1(27 + 2x) = 18 + -2x 45 + (27 * -1 + 2x * -1) = 18 + -2x 45 + (-27 + -2x) = 18 + -2x Combine like terms: 45 + -27 = 18 18 + -2x = 18 + -2x Add '-18' to each side of the equation. 18 + -18 + -2x = 18 + -18 + -2x Combine like terms: 18 + -18 = 0 0 + -2x = 18 + -18 + -2x -2x = 18 + -18 + -2x Combine like terms: 18 + -18 = 0 -2x = 0 + -2x -2x = -2x Add '2x' to each side of the equation. -2x + 2x = -2x + 2x Combine like terms: -2x + 2x = 0 0 = -2x + 2x Combine like terms: -2x + 2x = 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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