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Simplifying -4 = -4(x + -7) Reorder the terms: -4 = -4(-7 + x) -4 = (-7 * -4 + x * -4) -4 = (28 + -4x) Solving -4 = 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. -4 + 4x = 28 + -4x + 4x Combine like terms: -4x + 4x = 0 -4 + 4x = 28 + 0 -4 + 4x = 28 Add '4' to each side of the equation. -4 + 4 + 4x = 28 + 4 Combine like terms: -4 + 4 = 0 0 + 4x = 28 + 4 4x = 28 + 4 Combine like terms: 28 + 4 = 32 4x = 32 Divide each side by '4'. x = 8 Simplifying x = 8
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