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Simplifying 90x + 30 = 120 + -30x Reorder the terms: 30 + 90x = 120 + -30x Solving 30 + 90x = 120 + -30x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '30x' to each side of the equation. 30 + 90x + 30x = 120 + -30x + 30x Combine like terms: 90x + 30x = 120x 30 + 120x = 120 + -30x + 30x Combine like terms: -30x + 30x = 0 30 + 120x = 120 + 0 30 + 120x = 120 Add '-30' to each side of the equation. 30 + -30 + 120x = 120 + -30 Combine like terms: 30 + -30 = 0 0 + 120x = 120 + -30 120x = 120 + -30 Combine like terms: 120 + -30 = 90 120x = 90 Divide each side by '120'. x = 0.75 Simplifying x = 0.75
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