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Simplifying 6x + 5(20 + -2x) = 12 6x + (20 * 5 + -2x * 5) = 12 6x + (100 + -10x) = 12 Reorder the terms: 100 + 6x + -10x = 12 Combine like terms: 6x + -10x = -4x 100 + -4x = 12 Solving 100 + -4x = 12 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-100' to each side of the equation. 100 + -100 + -4x = 12 + -100 Combine like terms: 100 + -100 = 0 0 + -4x = 12 + -100 -4x = 12 + -100 Combine like terms: 12 + -100 = -88 -4x = -88 Divide each side by '-4'. x = 22 Simplifying x = 22
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