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Simplifying 0.9(x + 90) + 0.7 = 145 Reorder the terms: 0.9(90 + x) + 0.7 = 145 (90 * 0.9 + x * 0.9) + 0.7 = 145 (81 + 0.9x) + 0.7 = 145 Reorder the terms: 81 + 0.7 + 0.9x = 145 Combine like terms: 81 + 0.7 = 81.7 81.7 + 0.9x = 145 Solving 81.7 + 0.9x = 145 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-81.7' to each side of the equation. 81.7 + -81.7 + 0.9x = 145 + -81.7 Combine like terms: 81.7 + -81.7 = 0.0 0.0 + 0.9x = 145 + -81.7 0.9x = 145 + -81.7 Combine like terms: 145 + -81.7 = 63.3 0.9x = 63.3 Divide each side by '0.9'. x = 70.33333333 Simplifying x = 70.33333333
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