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Simplifying 7(7x + -4) = 28x Reorder the terms: 7(-4 + 7x) = 28x (-4 * 7 + 7x * 7) = 28x (-28 + 49x) = 28x Solving -28 + 49x = 28x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-28x' to each side of the equation. -28 + 49x + -28x = 28x + -28x Combine like terms: 49x + -28x = 21x -28 + 21x = 28x + -28x Combine like terms: 28x + -28x = 0 -28 + 21x = 0 Add '28' to each side of the equation. -28 + 28 + 21x = 0 + 28 Combine like terms: -28 + 28 = 0 0 + 21x = 0 + 28 21x = 0 + 28 Combine like terms: 0 + 28 = 28 21x = 28 Divide each side by '21'. x = 1.333333333 Simplifying x = 1.333333333
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