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Simplifying (7x + 3) + -1(3x + 5) = 0 Reorder the terms: (3 + 7x) + -1(3x + 5) = 0 Remove parenthesis around (3 + 7x) 3 + 7x + -1(3x + 5) = 0 Reorder the terms: 3 + 7x + -1(5 + 3x) = 0 3 + 7x + (5 * -1 + 3x * -1) = 0 3 + 7x + (-5 + -3x) = 0 Reorder the terms: 3 + -5 + 7x + -3x = 0 Combine like terms: 3 + -5 = -2 -2 + 7x + -3x = 0 Combine like terms: 7x + -3x = 4x -2 + 4x = 0 Solving -2 + 4x = 0 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 + 4x = 0 + 2 Combine like terms: -2 + 2 = 0 0 + 4x = 0 + 2 4x = 0 + 2 Combine like terms: 0 + 2 = 2 4x = 2 Divide each side by '4'. x = 0.5 Simplifying x = 0.5
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