0.3+(0.2a-0.5)+0.2(a+2)=9

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Solution for 0.3+(0.2a-0.5)+0.2(a+2)=9 equation: 



0.3+(0.2a-0.5)+0.2(a+2)=9

We move all terms to the left:

0.3+(0.2a-0.5)+0.2(a+2)-(9)=0

We add all the numbers together, and all the variables

(0.2a-0.5)+0.2(a+2)-8.7=0

We multiply parentheses

(0.2a-0.5)+0.2a+0.4-8.7=0

We get rid of parentheses

0.2a+0.2a-0.5+0.4-8.7=0

We add all the numbers together, and all the variables

0.4a-8.8=0

We move all terms containing a to the left, all other terms to the right

0.4a=8.8

a=8.8/0.4

a=22

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