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Simplifying -15a + 30 = -89 Reorder the terms: 30 + -15a = -89 Solving 30 + -15a = -89 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-30' to each side of the equation. 30 + -30 + -15a = -89 + -30 Combine like terms: 30 + -30 = 0 0 + -15a = -89 + -30 -15a = -89 + -30 Combine like terms: -89 + -30 = -119 -15a = -119 Divide each side by '-15'. a = 7.933333333 Simplifying a = 7.933333333
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