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Simplifying -7(-4 + -4x) = 224 (-4 * -7 + -4x * -7) = 224 (28 + 28x) = 224 Solving 28 + 28x = 224 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-28' to each side of the equation. 28 + -28 + 28x = 224 + -28 Combine like terms: 28 + -28 = 0 0 + 28x = 224 + -28 28x = 224 + -28 Combine like terms: 224 + -28 = 196 28x = 196 Divide each side by '28'. x = 7 Simplifying x = 7
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