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Simplifying a = 18 + 7a Solving a = 18 + 7a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-7a' to each side of the equation. a + -7a = 18 + 7a + -7a Combine like terms: a + -7a = -6a -6a = 18 + 7a + -7a Combine like terms: 7a + -7a = 0 -6a = 18 + 0 -6a = 18 Divide each side by '-6'. a = -3 Simplifying a = -3
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