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Simplifying 30x + -135 = 15(2x + -9) Reorder the terms: -135 + 30x = 15(2x + -9) Reorder the terms: -135 + 30x = 15(-9 + 2x) -135 + 30x = (-9 * 15 + 2x * 15) -135 + 30x = (-135 + 30x) Add '135' to each side of the equation. -135 + 135 + 30x = -135 + 135 + 30x Combine like terms: -135 + 135 = 0 0 + 30x = -135 + 135 + 30x 30x = -135 + 135 + 30x Combine like terms: -135 + 135 = 0 30x = 0 + 30x 30x = 30x Add '-30x' to each side of the equation. 30x + -30x = 30x + -30x Combine like terms: 30x + -30x = 0 0 = 30x + -30x Combine like terms: 30x + -30x = 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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