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Simplifying 9 + -7x = 40 + -14x Solving 9 + -7x = 40 + -14x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '14x' to each side of the equation. 9 + -7x + 14x = 40 + -14x + 14x Combine like terms: -7x + 14x = 7x 9 + 7x = 40 + -14x + 14x Combine like terms: -14x + 14x = 0 9 + 7x = 40 + 0 9 + 7x = 40 Add '-9' to each side of the equation. 9 + -9 + 7x = 40 + -9 Combine like terms: 9 + -9 = 0 0 + 7x = 40 + -9 7x = 40 + -9 Combine like terms: 40 + -9 = 31 7x = 31 Divide each side by '7'. x = 4.428571429 Simplifying x = 4.428571429
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