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Simplifying 2x + 78 = 7x + -90 Reorder the terms: 78 + 2x = 7x + -90 Reorder the terms: 78 + 2x = -90 + 7x Solving 78 + 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. 78 + 2x + -7x = -90 + 7x + -7x Combine like terms: 2x + -7x = -5x 78 + -5x = -90 + 7x + -7x Combine like terms: 7x + -7x = 0 78 + -5x = -90 + 0 78 + -5x = -90 Add '-78' to each side of the equation. 78 + -78 + -5x = -90 + -78 Combine like terms: 78 + -78 = 0 0 + -5x = -90 + -78 -5x = -90 + -78 Combine like terms: -90 + -78 = -168 -5x = -168 Divide each side by '-5'. x = 33.6 Simplifying x = 33.6
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