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Simplifying 30x + 9x + 20 = 100 Reorder the terms: 20 + 30x + 9x = 100 Combine like terms: 30x + 9x = 39x 20 + 39x = 100 Solving 20 + 39x = 100 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + 39x = 100 + -20 Combine like terms: 20 + -20 = 0 0 + 39x = 100 + -20 39x = 100 + -20 Combine like terms: 100 + -20 = 80 39x = 80 Divide each side by '39'. x = 2.051282051 Simplifying x = 2.051282051
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