75a-22.5a=420

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Solution for 75a-22.5a=420 equation:


75a-22.5a=420

We simplify the equation to the form, which is simple to understand 
75a-22.5a=420

We move all terms containing a to the left and all other terms to the right. 
+75a-22.5a=+420

We simplify left and right side of the equation. 
+52.5a=+420

We divide both sides of the equation by 52.5 to get a. 
a=8

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