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Simplifying 50 + 3x = 80 + 7x Solving 50 + 3x = 80 + 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. 50 + 3x + -7x = 80 + 7x + -7x Combine like terms: 3x + -7x = -4x 50 + -4x = 80 + 7x + -7x Combine like terms: 7x + -7x = 0 50 + -4x = 80 + 0 50 + -4x = 80 Add '-50' to each side of the equation. 50 + -50 + -4x = 80 + -50 Combine like terms: 50 + -50 = 0 0 + -4x = 80 + -50 -4x = 80 + -50 Combine like terms: 80 + -50 = 30 -4x = 30 Divide each side by '-4'. x = -7.5 Simplifying x = -7.5
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