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Simplifying 12 = -8x + 4(x + -7) Reorder the terms: 12 = -8x + 4(-7 + x) 12 = -8x + (-7 * 4 + x * 4) 12 = -8x + (-28 + 4x) Reorder the terms: 12 = -28 + -8x + 4x Combine like terms: -8x + 4x = -4x 12 = -28 + -4x Solving 12 = -28 + -4x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4x' to each side of the equation. 12 + 4x = -28 + -4x + 4x Combine like terms: -4x + 4x = 0 12 + 4x = -28 + 0 12 + 4x = -28 Add '-12' to each side of the equation. 12 + -12 + 4x = -28 + -12 Combine like terms: 12 + -12 = 0 0 + 4x = -28 + -12 4x = -28 + -12 Combine like terms: -28 + -12 = -40 4x = -40 Divide each side by '4'. x = -10 Simplifying x = -10
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