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Simplifying 2x + 7 = 15 + 4x Reorder the terms: 7 + 2x = 15 + 4x Solving 7 + 2x = 15 + 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. 7 + 2x + -4x = 15 + 4x + -4x Combine like terms: 2x + -4x = -2x 7 + -2x = 15 + 4x + -4x Combine like terms: 4x + -4x = 0 7 + -2x = 15 + 0 7 + -2x = 15 Add '-7' to each side of the equation. 7 + -7 + -2x = 15 + -7 Combine like terms: 7 + -7 = 0 0 + -2x = 15 + -7 -2x = 15 + -7 Combine like terms: 15 + -7 = 8 -2x = 8 Divide each side by '-2'. x = -4 Simplifying x = -4
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