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Simplifying -7(x + 1) + -15 = 12 + 8 Reorder the terms: -7(1 + x) + -15 = 12 + 8 (1 * -7 + x * -7) + -15 = 12 + 8 (-7 + -7x) + -15 = 12 + 8 Reorder the terms: -7 + -15 + -7x = 12 + 8 Combine like terms: -7 + -15 = -22 -22 + -7x = 12 + 8 Combine like terms: 12 + 8 = 20 -22 + -7x = 20 Solving -22 + -7x = 20 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '22' to each side of the equation. -22 + 22 + -7x = 20 + 22 Combine like terms: -22 + 22 = 0 0 + -7x = 20 + 22 -7x = 20 + 22 Combine like terms: 20 + 22 = 42 -7x = 42 Divide each side by '-7'. x = -6 Simplifying x = -6
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