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Simplifying 7x + 7(4x + -18) = 84 Reorder the terms: 7x + 7(-18 + 4x) = 84 7x + (-18 * 7 + 4x * 7) = 84 7x + (-126 + 28x) = 84 Reorder the terms: -126 + 7x + 28x = 84 Combine like terms: 7x + 28x = 35x -126 + 35x = 84 Solving -126 + 35x = 84 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '126' to each side of the equation. -126 + 126 + 35x = 84 + 126 Combine like terms: -126 + 126 = 0 0 + 35x = 84 + 126 35x = 84 + 126 Combine like terms: 84 + 126 = 210 35x = 210 Divide each side by '35'. x = 6 Simplifying x = 6
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