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Simplifying 21 = 0.075a Solving 21 = 0.075a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-0.075a' to each side of the equation. 21 + -0.075a = 0.075a + -0.075a Combine like terms: 0.075a + -0.075a = 0.000 21 + -0.075a = 0.000 Add '-21' to each side of the equation. 21 + -21 + -0.075a = 0.000 + -21 Combine like terms: 21 + -21 = 0 0 + -0.075a = 0.000 + -21 -0.075a = 0.000 + -21 Combine like terms: 0.000 + -21 = -21 -0.075a = -21 Divide each side by '-0.075'. a = 280 Simplifying a = 280
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