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Simplifying 75 + 7a = 2a Solving 75 + 7a = 2a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-2a' to each side of the equation. 75 + 7a + -2a = 2a + -2a Combine like terms: 7a + -2a = 5a 75 + 5a = 2a + -2a Combine like terms: 2a + -2a = 0 75 + 5a = 0 Add '-75' to each side of the equation. 75 + -75 + 5a = 0 + -75 Combine like terms: 75 + -75 = 0 0 + 5a = 0 + -75 5a = 0 + -75 Combine like terms: 0 + -75 = -75 5a = -75 Divide each side by '5'. a = -15 Simplifying a = -15
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