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Simplifying 8a + -13 = 4a Reorder the terms: -13 + 8a = 4a Solving -13 + 8a = 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. -13 + 8a + -4a = 4a + -4a Combine like terms: 8a + -4a = 4a -13 + 4a = 4a + -4a Combine like terms: 4a + -4a = 0 -13 + 4a = 0 Add '13' to each side of the equation. -13 + 13 + 4a = 0 + 13 Combine like terms: -13 + 13 = 0 0 + 4a = 0 + 13 4a = 0 + 13 Combine like terms: 0 + 13 = 13 4a = 13 Divide each side by '4'. a = 3.25 Simplifying a = 3.25
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