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Simplifying -3(5x + -5) + 7 = -15x + 22 Reorder the terms: -3(-5 + 5x) + 7 = -15x + 22 (-5 * -3 + 5x * -3) + 7 = -15x + 22 (15 + -15x) + 7 = -15x + 22 Reorder the terms: 15 + 7 + -15x = -15x + 22 Combine like terms: 15 + 7 = 22 22 + -15x = -15x + 22 Reorder the terms: 22 + -15x = 22 + -15x Add '-22' to each side of the equation. 22 + -22 + -15x = 22 + -22 + -15x Combine like terms: 22 + -22 = 0 0 + -15x = 22 + -22 + -15x -15x = 22 + -22 + -15x Combine like terms: 22 + -22 = 0 -15x = 0 + -15x -15x = -15x Add '15x' to each side of the equation. -15x + 15x = -15x + 15x Combine like terms: -15x + 15x = 0 0 = -15x + 15x Combine like terms: -15x + 15x = 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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