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Simplifying -3 + 7x = -7 + 8x Solving -3 + 7x = -7 + 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. -3 + 7x + -8x = -7 + 8x + -8x Combine like terms: 7x + -8x = -1x -3 + -1x = -7 + 8x + -8x Combine like terms: 8x + -8x = 0 -3 + -1x = -7 + 0 -3 + -1x = -7 Add '3' to each side of the equation. -3 + 3 + -1x = -7 + 3 Combine like terms: -3 + 3 = 0 0 + -1x = -7 + 3 -1x = -7 + 3 Combine like terms: -7 + 3 = -4 -1x = -4 Divide each side by '-1'. x = 4 Simplifying x = 4
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