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Simplifying 7x + -12 = 2x + 90 Reorder the terms: -12 + 7x = 2x + 90 Reorder the terms: -12 + 7x = 90 + 2x Solving -12 + 7x = 90 + 2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2x' to each side of the equation. -12 + 7x + -2x = 90 + 2x + -2x Combine like terms: 7x + -2x = 5x -12 + 5x = 90 + 2x + -2x Combine like terms: 2x + -2x = 0 -12 + 5x = 90 + 0 -12 + 5x = 90 Add '12' to each side of the equation. -12 + 12 + 5x = 90 + 12 Combine like terms: -12 + 12 = 0 0 + 5x = 90 + 12 5x = 90 + 12 Combine like terms: 90 + 12 = 102 5x = 102 Divide each side by '5'. x = 20.4 Simplifying x = 20.4
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