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Simplifying 5a + 7 = 4 + -8a Reorder the terms: 7 + 5a = 4 + -8a Solving 7 + 5a = 4 + -8a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '8a' to each side of the equation. 7 + 5a + 8a = 4 + -8a + 8a Combine like terms: 5a + 8a = 13a 7 + 13a = 4 + -8a + 8a Combine like terms: -8a + 8a = 0 7 + 13a = 4 + 0 7 + 13a = 4 Add '-7' to each side of the equation. 7 + -7 + 13a = 4 + -7 Combine like terms: 7 + -7 = 0 0 + 13a = 4 + -7 13a = 4 + -7 Combine like terms: 4 + -7 = -3 13a = -3 Divide each side by '13'. a = -0.2307692308 Simplifying a = -0.2307692308
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