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Simplifying -13 = 2a + -8 Reorder the terms: -13 = -8 + 2a Solving -13 = -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. -13 + -2a = -8 + 2a + -2a Combine like terms: 2a + -2a = 0 -13 + -2a = -8 + 0 -13 + -2a = -8 Add '13' to each side of the equation. -13 + 13 + -2a = -8 + 13 Combine like terms: -13 + 13 = 0 0 + -2a = -8 + 13 -2a = -8 + 13 Combine like terms: -8 + 13 = 5 -2a = 5 Divide each side by '-2'. a = -2.5 Simplifying a = -2.5
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