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Simplifying -55 + 2x = 90 + 7x Solving -55 + 2x = 90 + 7x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7x' to each side of the equation. -55 + 2x + -7x = 90 + 7x + -7x Combine like terms: 2x + -7x = -5x -55 + -5x = 90 + 7x + -7x Combine like terms: 7x + -7x = 0 -55 + -5x = 90 + 0 -55 + -5x = 90 Add '55' to each side of the equation. -55 + 55 + -5x = 90 + 55 Combine like terms: -55 + 55 = 0 0 + -5x = 90 + 55 -5x = 90 + 55 Combine like terms: 90 + 55 = 145 -5x = 145 Divide each side by '-5'. x = -29 Simplifying x = -29
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