-a+1/2=21/2

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Solution for -a+1/2=21/2 equation: 



-a+1/2=21/2

We move all terms to the left:

-a+1/2-(21/2)=0

We add all the numbers together, and all the variables

-a+1/2-(+21/2)=0

We add all the numbers together, and all the variables

-1a+1/2-(+21/2)=0

We get rid of parentheses

-1a+1/2-21/2=0

We multiply all the terms by the denominator


-1a*2+1-21=0

We add all the numbers together, and all the variables

-1a*2-20=0

Wy multiply elements

-2a-20=0

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

-2a=20

a=20/-2

a=-10

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