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Simplifying -4(2a + -1) + (a + -3) = -2 Reorder the terms: -4(-1 + 2a) + (a + -3) = -2 (-1 * -4 + 2a * -4) + (a + -3) = -2 (4 + -8a) + (a + -3) = -2 Reorder the terms: 4 + -8a + (-3 + a) = -2 Remove parenthesis around (-3 + a) 4 + -8a + -3 + a = -2 Reorder the terms: 4 + -3 + -8a + a = -2 Combine like terms: 4 + -3 = 1 1 + -8a + a = -2 Combine like terms: -8a + a = -7a 1 + -7a = -2 Solving 1 + -7a = -2 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -7a = -2 + -1 Combine like terms: 1 + -1 = 0 0 + -7a = -2 + -1 -7a = -2 + -1 Combine like terms: -2 + -1 = -3 -7a = -3 Divide each side by '-7'. a = 0.4285714286 Simplifying a = 0.4285714286
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