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Simplifying 25 + 2.5a = 7.5a Solving 25 + 2.5a = 7.5a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-7.5a' to each side of the equation. 25 + 2.5a + -7.5a = 7.5a + -7.5a Combine like terms: 2.5a + -7.5a = -5a 25 + -5a = 7.5a + -7.5a Combine like terms: 7.5a + -7.5a = 0.0 25 + -5a = 0.0 Add '-25' to each side of the equation. 25 + -25 + -5a = 0.0 + -25 Combine like terms: 25 + -25 = 0 0 + -5a = 0.0 + -25 -5a = 0.0 + -25 Combine like terms: 0.0 + -25 = -25 -5a = -25 Divide each side by '-5'. a = 5 Simplifying a = 5
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