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Simplifying 166 + -5x = 40x + 21 Reorder the terms: 166 + -5x = 21 + 40x Solving 166 + -5x = 21 + 40x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-40x' to each side of the equation. 166 + -5x + -40x = 21 + 40x + -40x Combine like terms: -5x + -40x = -45x 166 + -45x = 21 + 40x + -40x Combine like terms: 40x + -40x = 0 166 + -45x = 21 + 0 166 + -45x = 21 Add '-166' to each side of the equation. 166 + -166 + -45x = 21 + -166 Combine like terms: 166 + -166 = 0 0 + -45x = 21 + -166 -45x = 21 + -166 Combine like terms: 21 + -166 = -145 -45x = -145 Divide each side by '-45'. x = 3.222222222 Simplifying x = 3.222222222
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