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Simplifying 4 + 7a = -8a + -11 Reorder the terms: 4 + 7a = -11 + -8a Solving 4 + 7a = -11 + -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. 4 + 7a + 8a = -11 + -8a + 8a Combine like terms: 7a + 8a = 15a 4 + 15a = -11 + -8a + 8a Combine like terms: -8a + 8a = 0 4 + 15a = -11 + 0 4 + 15a = -11 Add '-4' to each side of the equation. 4 + -4 + 15a = -11 + -4 Combine like terms: 4 + -4 = 0 0 + 15a = -11 + -4 15a = -11 + -4 Combine like terms: -11 + -4 = -15 15a = -15 Divide each side by '15'. a = -1 Simplifying a = -1
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