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Simplifying 3x + -15(x + 2) = 13 + -7x Reorder the terms: 3x + -15(2 + x) = 13 + -7x 3x + (2 * -15 + x * -15) = 13 + -7x 3x + (-30 + -15x) = 13 + -7x Reorder the terms: -30 + 3x + -15x = 13 + -7x Combine like terms: 3x + -15x = -12x -30 + -12x = 13 + -7x Solving -30 + -12x = 13 + -7x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7x' to each side of the equation. -30 + -12x + 7x = 13 + -7x + 7x Combine like terms: -12x + 7x = -5x -30 + -5x = 13 + -7x + 7x Combine like terms: -7x + 7x = 0 -30 + -5x = 13 + 0 -30 + -5x = 13 Add '30' to each side of the equation. -30 + 30 + -5x = 13 + 30 Combine like terms: -30 + 30 = 0 0 + -5x = 13 + 30 -5x = 13 + 30 Combine like terms: 13 + 30 = 43 -5x = 43 Divide each side by '-5'. x = -8.6 Simplifying x = -8.6
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