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Simplifying 9 + 4x = 7x Solving 9 + 4x = 7x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7x' to each side of the equation. 9 + 4x + -7x = 7x + -7x Combine like terms: 4x + -7x = -3x 9 + -3x = 7x + -7x Combine like terms: 7x + -7x = 0 9 + -3x = 0 Add '-9' to each side of the equation. 9 + -9 + -3x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -3x = 0 + -9 -3x = 0 + -9 Combine like terms: 0 + -9 = -9 -3x = -9 Divide each side by '-3'. x = 3 Simplifying x = 3
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