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Simplifying 30 + 4x = 7x Solving 30 + 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. 30 + 4x + -7x = 7x + -7x Combine like terms: 4x + -7x = -3x 30 + -3x = 7x + -7x Combine like terms: 7x + -7x = 0 30 + -3x = 0 Add '-30' to each side of the equation. 30 + -30 + -3x = 0 + -30 Combine like terms: 30 + -30 = 0 0 + -3x = 0 + -30 -3x = 0 + -30 Combine like terms: 0 + -30 = -30 -3x = -30 Divide each side by '-3'. x = 10 Simplifying x = 10
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