-20=4/9u

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Solution for -20=4/9u equation:



-20=4/9u
We move all terms to the left:
-20-(4/9u)=0
Domain of the equation: 9u)!=0
u!=0/1
u!=0
u∈R
We add all the numbers together, and all the variables
-(+4/9u)-20=0
We get rid of parentheses
-4/9u-20=0
We multiply all the terms by the denominator
-20*9u-4=0
Wy multiply elements
-180u-4=0
We move all terms containing u to the left, all other terms to the right
-180u=4
u=4/-180
u=-1/45

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