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Simplifying 7x + 90 = 120 + -30x Reorder the terms: 90 + 7x = 120 + -30x Solving 90 + 7x = 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. 90 + 7x + 30x = 120 + -30x + 30x Combine like terms: 7x + 30x = 37x 90 + 37x = 120 + -30x + 30x Combine like terms: -30x + 30x = 0 90 + 37x = 120 + 0 90 + 37x = 120 Add '-90' to each side of the equation. 90 + -90 + 37x = 120 + -90 Combine like terms: 90 + -90 = 0 0 + 37x = 120 + -90 37x = 120 + -90 Combine like terms: 120 + -90 = 30 37x = 30 Divide each side by '37'. x = 0.8108108108 Simplifying x = 0.8108108108
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