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Simplifying 7(a + 2) = 63 Reorder the terms: 7(2 + a) = 63 (2 * 7 + a * 7) = 63 (14 + 7a) = 63 Solving 14 + 7a = 63 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-14' to each side of the equation. 14 + -14 + 7a = 63 + -14 Combine like terms: 14 + -14 = 0 0 + 7a = 63 + -14 7a = 63 + -14 Combine like terms: 63 + -14 = 49 7a = 49 Divide each side by '7'. a = 7 Simplifying a = 7
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