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Simplifying 7 = -4(5 + -2x) 7 = (5 * -4 + -2x * -4) 7 = (-20 + 8x) Solving 7 = -20 + 8x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8x' to each side of the equation. 7 + -8x = -20 + 8x + -8x Combine like terms: 8x + -8x = 0 7 + -8x = -20 + 0 7 + -8x = -20 Add '-7' to each side of the equation. 7 + -7 + -8x = -20 + -7 Combine like terms: 7 + -7 = 0 0 + -8x = -20 + -7 -8x = -20 + -7 Combine like terms: -20 + -7 = -27 -8x = -27 Divide each side by '-8'. x = 3.375 Simplifying x = 3.375
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