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Simplifying 7a + 4c = 40 Solving 7a + 4c = 40 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-4c' to each side of the equation. 7a + 4c + -4c = 40 + -4c Combine like terms: 4c + -4c = 0 7a + 0 = 40 + -4c 7a = 40 + -4c Divide each side by '7'. a = 5.714285714 + -0.5714285714c Simplifying a = 5.714285714 + -0.5714285714c
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