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Simplifying 4x + -1(-1x + 7) = 0 Reorder the terms: 4x + -1(7 + -1x) = 0 4x + (7 * -1 + -1x * -1) = 0 4x + (-7 + 1x) = 0 Reorder the terms: -7 + 4x + 1x = 0 Combine like terms: 4x + 1x = 5x -7 + 5x = 0 Solving -7 + 5x = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + 5x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + 5x = 0 + 7 5x = 0 + 7 Combine like terms: 0 + 7 = 7 5x = 7 Divide each side by '5'. x = 1.4 Simplifying x = 1.4
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