3/4-21=b

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Solution for 3/4-21=b equation: 



3/4-21=b

We move all terms to the left:

3/4-21-(b)=0

We add all the numbers together, and all the variables

-1b-21+3/4=0

We multiply all the terms by the denominator


-1b*4+3-21*4=0

We add all the numbers together, and all the variables

-1b*4-81=0

Wy multiply elements

-4b-81=0

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

-4b=81

b=81/-4

b=-20+1/4

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