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Simplifying 78 = -2(x + 8) + -5x Reorder the terms: 78 = -2(8 + x) + -5x 78 = (8 * -2 + x * -2) + -5x 78 = (-16 + -2x) + -5x Combine like terms: -2x + -5x = -7x 78 = -16 + -7x Solving 78 = -16 + -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. 78 + 7x = -16 + -7x + 7x Combine like terms: -7x + 7x = 0 78 + 7x = -16 + 0 78 + 7x = -16 Add '-78' to each side of the equation. 78 + -78 + 7x = -16 + -78 Combine like terms: 78 + -78 = 0 0 + 7x = -16 + -78 7x = -16 + -78 Combine like terms: -16 + -78 = -94 7x = -94 Divide each side by '7'. x = -13.42857143 Simplifying x = -13.42857143
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