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Simplifying (-7x + -9) = -2(-1x + -9) Reorder the terms: (-9 + -7x) = -2(-1x + -9) Remove parenthesis around (-9 + -7x) -9 + -7x = -2(-1x + -9) Reorder the terms: -9 + -7x = -2(-9 + -1x) -9 + -7x = (-9 * -2 + -1x * -2) -9 + -7x = (18 + 2x) Solving -9 + -7x = 18 + 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. -9 + -7x + -2x = 18 + 2x + -2x Combine like terms: -7x + -2x = -9x -9 + -9x = 18 + 2x + -2x Combine like terms: 2x + -2x = 0 -9 + -9x = 18 + 0 -9 + -9x = 18 Add '9' to each side of the equation. -9 + 9 + -9x = 18 + 9 Combine like terms: -9 + 9 = 0 0 + -9x = 18 + 9 -9x = 18 + 9 Combine like terms: 18 + 9 = 27 -9x = 27 Divide each side by '-9'. x = -3 Simplifying x = -3
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