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Simplifying 121 + -6x = 2x + 21 Reorder the terms: 121 + -6x = 21 + 2x Solving 121 + -6x = 21 + 2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2x' to each side of the equation. 121 + -6x + -2x = 21 + 2x + -2x Combine like terms: -6x + -2x = -8x 121 + -8x = 21 + 2x + -2x Combine like terms: 2x + -2x = 0 121 + -8x = 21 + 0 121 + -8x = 21 Add '-121' to each side of the equation. 121 + -121 + -8x = 21 + -121 Combine like terms: 121 + -121 = 0 0 + -8x = 21 + -121 -8x = 21 + -121 Combine like terms: 21 + -121 = -100 -8x = -100 Divide each side by '-8'. x = 12.5 Simplifying x = 12.5
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