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Simplifying 30 + 2x = 2(7 + 2x) 30 + 2x = (7 * 2 + 2x * 2) 30 + 2x = (14 + 4x) Solving 30 + 2x = 14 + 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. 30 + 2x + -4x = 14 + 4x + -4x Combine like terms: 2x + -4x = -2x 30 + -2x = 14 + 4x + -4x Combine like terms: 4x + -4x = 0 30 + -2x = 14 + 0 30 + -2x = 14 Add '-30' to each side of the equation. 30 + -30 + -2x = 14 + -30 Combine like terms: 30 + -30 = 0 0 + -2x = 14 + -30 -2x = 14 + -30 Combine like terms: 14 + -30 = -16 -2x = -16 Divide each side by '-2'. x = 8 Simplifying x = 8
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