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Simplifying 66 + 20x = 400 + 66x Solving 66 + 20x = 400 + 66x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-66x' to each side of the equation. 66 + 20x + -66x = 400 + 66x + -66x Combine like terms: 20x + -66x = -46x 66 + -46x = 400 + 66x + -66x Combine like terms: 66x + -66x = 0 66 + -46x = 400 + 0 66 + -46x = 400 Add '-66' to each side of the equation. 66 + -66 + -46x = 400 + -66 Combine like terms: 66 + -66 = 0 0 + -46x = 400 + -66 -46x = 400 + -66 Combine like terms: 400 + -66 = 334 -46x = 334 Divide each side by '-46'. x = -7.260869565 Simplifying x = -7.260869565
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