.5(a+17.5)=13.25

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Solution for .5(a+17.5)=13.25 equation: 



.5(a+17.5)=13.25

We move all terms to the left:

.5(a+17.5)-(13.25)=0

We add all the numbers together, and all the variables

.5(a+17.5)-13.25=0

We multiply parentheses

0.5a+8.75-13.25=0

We add all the numbers together, and all the variables

0.5a-4.5=0

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

0.5a=4.5

a=4.5/0.5

a=9

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