6.4+2.1(a-2)=8.5

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Solution for 6.4+2.1(a-2)=8.5 equation:


6.4+2.1(a-2)=8.5

We simplify the equation to the form, which is simple to understand 
6.4+2.1(a-2)=8.5

Reorder the terms in parentheses
6.4+(+2.1a-4.2)=8.5

Remove unnecessary parentheses
+6.4+2.1a-4.2=+8.5

We move all terms containing a to the left and all other terms to the right. 
+2.1a=+8.5-6.4+4.2

We simplify left and right side of the equation. 
+2.1a=+6.3

We divide both sides of the equation by 2.1 to get a. 
a=3

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