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Simplifying 8a = 7a + 42 Reorder the terms: 8a = 42 + 7a Solving 8a = 42 + 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. 8a + -7a = 42 + 7a + -7a Combine like terms: 8a + -7a = 1a 1a = 42 + 7a + -7a Combine like terms: 7a + -7a = 0 1a = 42 + 0 1a = 42 Divide each side by '1'. a = 42 Simplifying a = 42
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