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Simplifying -7a + -4(a + 5) + 6 = -80 Reorder the terms: -7a + -4(5 + a) + 6 = -80 -7a + (5 * -4 + a * -4) + 6 = -80 -7a + (-20 + -4a) + 6 = -80 Reorder the terms: -20 + 6 + -7a + -4a = -80 Combine like terms: -20 + 6 = -14 -14 + -7a + -4a = -80 Combine like terms: -7a + -4a = -11a -14 + -11a = -80 Solving -14 + -11a = -80 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + -11a = -80 + 14 Combine like terms: -14 + 14 = 0 0 + -11a = -80 + 14 -11a = -80 + 14 Combine like terms: -80 + 14 = -66 -11a = -66 Divide each side by '-11'. a = 6 Simplifying a = 6
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