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Simplifying 250 + -30x = 400 + -50x Solving 250 + -30x = 400 + -50x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '50x' to each side of the equation. 250 + -30x + 50x = 400 + -50x + 50x Combine like terms: -30x + 50x = 20x 250 + 20x = 400 + -50x + 50x Combine like terms: -50x + 50x = 0 250 + 20x = 400 + 0 250 + 20x = 400 Add '-250' to each side of the equation. 250 + -250 + 20x = 400 + -250 Combine like terms: 250 + -250 = 0 0 + 20x = 400 + -250 20x = 400 + -250 Combine like terms: 400 + -250 = 150 20x = 150 Divide each side by '20'. x = 7.5 Simplifying x = 7.5
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