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Simplifying 3(x + -1) + -1ax = x + 4 Reorder the terms: 3(-1 + x) + -1ax = x + 4 (-1 * 3 + x * 3) + -1ax = x + 4 (-3 + 3x) + -1ax = x + 4 Reorder the terms: -3 + -1ax + 3x = x + 4 Reorder the terms: -3 + -1ax + 3x = 4 + x Solving -3 + -1ax + 3x = 4 + x Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '3' to each side of the equation. -3 + -1ax + 3 + 3x = 4 + 3 + x Reorder the terms: -3 + 3 + -1ax + 3x = 4 + 3 + x Combine like terms: -3 + 3 = 0 0 + -1ax + 3x = 4 + 3 + x -1ax + 3x = 4 + 3 + x Combine like terms: 4 + 3 = 7 -1ax + 3x = 7 + x Add '-3x' to each side of the equation. -1ax + 3x + -3x = 7 + x + -3x Combine like terms: 3x + -3x = 0 -1ax + 0 = 7 + x + -3x -1ax = 7 + x + -3x Combine like terms: x + -3x = -2x -1ax = 7 + -2x Divide each side by '-1x'. a = -7x-1 + 2 Simplifying a = -7x-1 + 2 Reorder the terms: a = 2 + -7x-1
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