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Simplifying 2x + 42 + x + -4 = 90 Reorder the terms: 42 + -4 + 2x + x = 90 Combine like terms: 42 + -4 = 38 38 + 2x + x = 90 Combine like terms: 2x + x = 3x 38 + 3x = 90 Solving 38 + 3x = 90 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-38' to each side of the equation. 38 + -38 + 3x = 90 + -38 Combine like terms: 38 + -38 = 0 0 + 3x = 90 + -38 3x = 90 + -38 Combine like terms: 90 + -38 = 52 3x = 52 Divide each side by '3'. x = 17.33333333 Simplifying x = 17.33333333
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