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Simplifying -9a + -10 = 18 + -4a Reorder the terms: -10 + -9a = 18 + -4a Solving -10 + -9a = 18 + -4a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '4a' to each side of the equation. -10 + -9a + 4a = 18 + -4a + 4a Combine like terms: -9a + 4a = -5a -10 + -5a = 18 + -4a + 4a Combine like terms: -4a + 4a = 0 -10 + -5a = 18 + 0 -10 + -5a = 18 Add '10' to each side of the equation. -10 + 10 + -5a = 18 + 10 Combine like terms: -10 + 10 = 0 0 + -5a = 18 + 10 -5a = 18 + 10 Combine like terms: 18 + 10 = 28 -5a = 28 Divide each side by '-5'. a = -5.6 Simplifying a = -5.6
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