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Simplifying 20x + 15x + 20(x + -1) + 16(x + -1) = 245 Reorder the terms: 20x + 15x + 20(-1 + x) + 16(x + -1) = 245 20x + 15x + (-1 * 20 + x * 20) + 16(x + -1) = 245 20x + 15x + (-20 + 20x) + 16(x + -1) = 245 Reorder the terms: 20x + 15x + -20 + 20x + 16(-1 + x) = 245 20x + 15x + -20 + 20x + (-1 * 16 + x * 16) = 245 20x + 15x + -20 + 20x + (-16 + 16x) = 245 Reorder the terms: -20 + -16 + 20x + 15x + 20x + 16x = 245 Combine like terms: -20 + -16 = -36 -36 + 20x + 15x + 20x + 16x = 245 Combine like terms: 20x + 15x = 35x -36 + 35x + 20x + 16x = 245 Combine like terms: 35x + 20x = 55x -36 + 55x + 16x = 245 Combine like terms: 55x + 16x = 71x -36 + 71x = 245 Solving -36 + 71x = 245 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '36' to each side of the equation. -36 + 36 + 71x = 245 + 36 Combine like terms: -36 + 36 = 0 0 + 71x = 245 + 36 71x = 245 + 36 Combine like terms: 245 + 36 = 281 71x = 281 Divide each side by '71'. x = 3.957746479 Simplifying x = 3.957746479
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