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Simplifying 7a + -3 = 39 Reorder the terms: -3 + 7a = 39 Solving -3 + 7a = 39 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + 7a = 39 + 3 Combine like terms: -3 + 3 = 0 0 + 7a = 39 + 3 7a = 39 + 3 Combine like terms: 39 + 3 = 42 7a = 42 Divide each side by '7'. a = 6 Simplifying a = 6
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