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Simplifying 15 + -3(x + 7) = 2x Reorder the terms: 15 + -3(7 + x) = 2x 15 + (7 * -3 + x * -3) = 2x 15 + (-21 + -3x) = 2x Combine like terms: 15 + -21 = -6 -6 + -3x = 2x Solving -6 + -3x = 2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2x' to each side of the equation. -6 + -3x + -2x = 2x + -2x Combine like terms: -3x + -2x = -5x -6 + -5x = 2x + -2x Combine like terms: 2x + -2x = 0 -6 + -5x = 0 Add '6' to each side of the equation. -6 + 6 + -5x = 0 + 6 Combine like terms: -6 + 6 = 0 0 + -5x = 0 + 6 -5x = 0 + 6 Combine like terms: 0 + 6 = 6 -5x = 6 Divide each side by '-5'. x = -1.2 Simplifying x = -1.2
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