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Simplifying 75 = 5(-4 + 2a) 75 = (-4 * 5 + 2a * 5) 75 = (-20 + 10a) Solving 75 = -20 + 10a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-10a' to each side of the equation. 75 + -10a = -20 + 10a + -10a Combine like terms: 10a + -10a = 0 75 + -10a = -20 + 0 75 + -10a = -20 Add '-75' to each side of the equation. 75 + -75 + -10a = -20 + -75 Combine like terms: 75 + -75 = 0 0 + -10a = -20 + -75 -10a = -20 + -75 Combine like terms: -20 + -75 = -95 -10a = -95 Divide each side by '-10'. a = 9.5 Simplifying a = 9.5
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