20a+(31-a)=441.50

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Solution for 20a+(31-a)=441.50 equation: 



20a+(31-a)=441.50

We move all terms to the left:

20a+(31-a)-(441.50)=0

We add all the numbers together, and all the variables

20a+(-1a+31)-(441.5)=0

We add all the numbers together, and all the variables

20a+(-1a+31)-441.5=0

We get rid of parentheses

20a-1a+31-441.5=0

We add all the numbers together, and all the variables

19a-410.5=0

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

19a=410.5

a=410.5/19

a=21+7.6666666666667/12.666666666667

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