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Simplifying -1(x + -7) = 3x Reorder the terms: -1(-7 + x) = 3x (-7 * -1 + x * -1) = 3x (7 + -1x) = 3x Solving 7 + -1x = 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. 7 + -1x + -3x = 3x + -3x Combine like terms: -1x + -3x = -4x 7 + -4x = 3x + -3x Combine like terms: 3x + -3x = 0 7 + -4x = 0 Add '-7' to each side of the equation. 7 + -7 + -4x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -4x = 0 + -7 -4x = 0 + -7 Combine like terms: 0 + -7 = -7 -4x = -7 Divide each side by '-4'. x = 1.75 Simplifying x = 1.75
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