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Simplifying 8 = 2a + 7a Combine like terms: 2a + 7a = 9a 8 = 9a Solving 8 = 9a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-9a' to each side of the equation. 8 + -9a = 9a + -9a Combine like terms: 9a + -9a = 0 8 + -9a = 0 Add '-8' to each side of the equation. 8 + -8 + -9a = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -9a = 0 + -8 -9a = 0 + -8 Combine like terms: 0 + -8 = -8 -9a = -8 Divide each side by '-9'. a = 0.8888888889 Simplifying a = 0.8888888889
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