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Simplifying 7 + 5 = 4x + 2 Combine like terms: 7 + 5 = 12 12 = 4x + 2 Reorder the terms: 12 = 2 + 4x Solving 12 = 2 + 4x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4x' to each side of the equation. 12 + -4x = 2 + 4x + -4x Combine like terms: 4x + -4x = 0 12 + -4x = 2 + 0 12 + -4x = 2 Add '-12' to each side of the equation. 12 + -12 + -4x = 2 + -12 Combine like terms: 12 + -12 = 0 0 + -4x = 2 + -12 -4x = 2 + -12 Combine like terms: 2 + -12 = -10 -4x = -10 Divide each side by '-4'. x = 2.5 Simplifying x = 2.5
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