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Simplifying 7x + -40 = 30 + -3x Reorder the terms: -40 + 7x = 30 + -3x Solving -40 + 7x = 30 + -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. -40 + 7x + 3x = 30 + -3x + 3x Combine like terms: 7x + 3x = 10x -40 + 10x = 30 + -3x + 3x Combine like terms: -3x + 3x = 0 -40 + 10x = 30 + 0 -40 + 10x = 30 Add '40' to each side of the equation. -40 + 40 + 10x = 30 + 40 Combine like terms: -40 + 40 = 0 0 + 10x = 30 + 40 10x = 30 + 40 Combine like terms: 30 + 40 = 70 10x = 70 Divide each side by '10'. x = 7 Simplifying x = 7
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