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Simplifying 3x + -7 = 2 + -1 + x + 7 Reorder the terms: -7 + 3x = 2 + -1 + x + 7 Reorder the terms: -7 + 3x = 2 + -1 + 7 + x Combine like terms: 2 + -1 = 1 -7 + 3x = 1 + 7 + x Combine like terms: 1 + 7 = 8 -7 + 3x = 8 + x Solving -7 + 3x = 8 + x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1x' to each side of the equation. -7 + 3x + -1x = 8 + x + -1x Combine like terms: 3x + -1x = 2x -7 + 2x = 8 + x + -1x Combine like terms: x + -1x = 0 -7 + 2x = 8 + 0 -7 + 2x = 8 Add '7' to each side of the equation. -7 + 7 + 2x = 8 + 7 Combine like terms: -7 + 7 = 0 0 + 2x = 8 + 7 2x = 8 + 7 Combine like terms: 8 + 7 = 15 2x = 15 Divide each side by '2'. x = 7.5 Simplifying x = 7.5
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