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Simplifying 4 + -1(x + 7) = 7x + -3 Reorder the terms: 4 + -1(7 + x) = 7x + -3 4 + (7 * -1 + x * -1) = 7x + -3 4 + (-7 + -1x) = 7x + -3 Combine like terms: 4 + -7 = -3 -3 + -1x = 7x + -3 Reorder the terms: -3 + -1x = -3 + 7x Add '3' to each side of the equation. -3 + 3 + -1x = -3 + 3 + 7x Combine like terms: -3 + 3 = 0 0 + -1x = -3 + 3 + 7x -1x = -3 + 3 + 7x Combine like terms: -3 + 3 = 0 -1x = 0 + 7x -1x = 7x Solving -1x = 7x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7x' to each side of the equation. -1x + -7x = 7x + -7x Combine like terms: -1x + -7x = -8x -8x = 7x + -7x Combine like terms: 7x + -7x = 0 -8x = 0 Divide each side by '-8'. x = 0 Simplifying x = 0
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