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Simplifying 7x + -42 = 28 + -3x Reorder the terms: -42 + 7x = 28 + -3x Solving -42 + 7x = 28 + -3x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3x' to each side of the equation. -42 + 7x + 3x = 28 + -3x + 3x Combine like terms: 7x + 3x = 10x -42 + 10x = 28 + -3x + 3x Combine like terms: -3x + 3x = 0 -42 + 10x = 28 + 0 -42 + 10x = 28 Add '42' to each side of the equation. -42 + 42 + 10x = 28 + 42 Combine like terms: -42 + 42 = 0 0 + 10x = 28 + 42 10x = 28 + 42 Combine like terms: 28 + 42 = 70 10x = 70 Divide each side by '10'. x = 7 Simplifying x = 7
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