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Simplifying 7 = 13 + -2X Solving 7 = 13 + -2X Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '2X' to each side of the equation. 7 + 2X = 13 + -2X + 2X Combine like terms: -2X + 2X = 0 7 + 2X = 13 + 0 7 + 2X = 13 Add '-7' to each side of the equation. 7 + -7 + 2X = 13 + -7 Combine like terms: 7 + -7 = 0 0 + 2X = 13 + -7 2X = 13 + -7 Combine like terms: 13 + -7 = 6 2X = 6 Divide each side by '2'. X = 3 Simplifying X = 3
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