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Simplifying -79 = -5x + 2(-1x + -15) Reorder the terms: -79 = -5x + 2(-15 + -1x) -79 = -5x + (-15 * 2 + -1x * 2) -79 = -5x + (-30 + -2x) Reorder the terms: -79 = -30 + -5x + -2x Combine like terms: -5x + -2x = -7x -79 = -30 + -7x Solving -79 = -30 + -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. -79 + 7x = -30 + -7x + 7x Combine like terms: -7x + 7x = 0 -79 + 7x = -30 + 0 -79 + 7x = -30 Add '79' to each side of the equation. -79 + 79 + 7x = -30 + 79 Combine like terms: -79 + 79 = 0 0 + 7x = -30 + 79 7x = -30 + 79 Combine like terms: -30 + 79 = 49 7x = 49 Divide each side by '7'. x = 7 Simplifying x = 7
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