21/4x=-9

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Solution for 21/4x=-9 equation: 



21/4x=-9

We move all terms to the left:

21/4x-(-9)=0



Domain of the equation: 4x!=0

x!=0/4

x!=0

x∈R



We add all the numbers together, and all the variables

21/4x+9=0

We multiply all the terms by the denominator


9*4x+21=0

Wy multiply elements

36x+21=0

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

36x=-21

x=-21/36

x=-7/12

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