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Simplifying 3x + 4x + -7 = 8x Reorder the terms: -7 + 3x + 4x = 8x Combine like terms: 3x + 4x = 7x -7 + 7x = 8x Solving -7 + 7x = 8x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8x' to each side of the equation. -7 + 7x + -8x = 8x + -8x Combine like terms: 7x + -8x = -1x -7 + -1x = 8x + -8x Combine like terms: 8x + -8x = 0 -7 + -1x = 0 Add '7' to each side of the equation. -7 + 7 + -1x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -1x = 0 + 7 -1x = 0 + 7 Combine like terms: 0 + 7 = 7 -1x = 7 Divide each side by '-1'. x = -7 Simplifying x = -7
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