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Simplifying (x + -15) = 3(x + -19) Reorder the terms: (-15 + x) = 3(x + -19) Remove parenthesis around (-15 + x) -15 + x = 3(x + -19) Reorder the terms: -15 + x = 3(-19 + x) -15 + x = (-19 * 3 + x * 3) -15 + x = (-57 + 3x) Solving -15 + x = -57 + 3x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3x' to each side of the equation. -15 + x + -3x = -57 + 3x + -3x Combine like terms: x + -3x = -2x -15 + -2x = -57 + 3x + -3x Combine like terms: 3x + -3x = 0 -15 + -2x = -57 + 0 -15 + -2x = -57 Add '15' to each side of the equation. -15 + 15 + -2x = -57 + 15 Combine like terms: -15 + 15 = 0 0 + -2x = -57 + 15 -2x = -57 + 15 Combine like terms: -57 + 15 = -42 -2x = -42 Divide each side by '-2'. x = 21 Simplifying x = 21
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