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Simplifying x + 12 = 8x + 20 Reorder the terms: 12 + x = 8x + 20 Reorder the terms: 12 + x = 20 + 8x Solving 12 + x = 20 + 8x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8x' to each side of the equation. 12 + x + -8x = 20 + 8x + -8x Combine like terms: x + -8x = -7x 12 + -7x = 20 + 8x + -8x Combine like terms: 8x + -8x = 0 12 + -7x = 20 + 0 12 + -7x = 20 Add '-12' to each side of the equation. 12 + -12 + -7x = 20 + -12 Combine like terms: 12 + -12 = 0 0 + -7x = 20 + -12 -7x = 20 + -12 Combine like terms: 20 + -12 = 8 -7x = 8 Divide each side by '-7'. x = -1.142857143 Simplifying x = -1.142857143
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