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Simplifying 7 + -9x = 109 + -30x Solving 7 + -9x = 109 + -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. 7 + -9x + 30x = 109 + -30x + 30x Combine like terms: -9x + 30x = 21x 7 + 21x = 109 + -30x + 30x Combine like terms: -30x + 30x = 0 7 + 21x = 109 + 0 7 + 21x = 109 Add '-7' to each side of the equation. 7 + -7 + 21x = 109 + -7 Combine like terms: 7 + -7 = 0 0 + 21x = 109 + -7 21x = 109 + -7 Combine like terms: 109 + -7 = 102 21x = 102 Divide each side by '21'. x = 4.857142857 Simplifying x = 4.857142857
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