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Simplifying 7x + 3x + 2 = 42 Reorder the terms: 2 + 7x + 3x = 42 Combine like terms: 7x + 3x = 10x 2 + 10x = 42 Solving 2 + 10x = 42 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + 10x = 42 + -2 Combine like terms: 2 + -2 = 0 0 + 10x = 42 + -2 10x = 42 + -2 Combine like terms: 42 + -2 = 40 10x = 40 Divide each side by '10'. x = 4 Simplifying x = 4
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