3/4u=-21

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Solution for 3/4u=-21 equation: 



3/4u=-21

We move all terms to the left:

3/4u-(-21)=0



Domain of the equation: 4u!=0

u!=0/4

u!=0

u∈R



We add all the numbers together, and all the variables

3/4u+21=0

We multiply all the terms by the denominator


21*4u+3=0

Wy multiply elements

84u+3=0

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

84u=-3

u=-3/84

u=-1/28

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