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Simplifying -18 = -2a + -8 Reorder the terms: -18 = -8 + -2a Solving -18 = -8 + -2a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '2a' to each side of the equation. -18 + 2a = -8 + -2a + 2a Combine like terms: -2a + 2a = 0 -18 + 2a = -8 + 0 -18 + 2a = -8 Add '18' to each side of the equation. -18 + 18 + 2a = -8 + 18 Combine like terms: -18 + 18 = 0 0 + 2a = -8 + 18 2a = -8 + 18 Combine like terms: -8 + 18 = 10 2a = 10 Divide each side by '2'. a = 5 Simplifying a = 5
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