7/5u=-42

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Solution for 7/5u=-42 equation:



7/5u=-42
We move all terms to the left:
7/5u-(-42)=0
Domain of the equation: 5u!=0
u!=0/5
u!=0
u∈R
We add all the numbers together, and all the variables
7/5u+42=0
We multiply all the terms by the denominator
42*5u+7=0
Wy multiply elements
210u+7=0
We move all terms containing u to the left, all other terms to the right
210u=-7
u=-7/210
u=-1/30

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