21/4x=-21

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Solution for 21/4x=-21 equation: 



21/4x=-21

We move all terms to the left:

21/4x-(-21)=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+21=0

We multiply all the terms by the denominator


21*4x+21=0

Wy multiply elements

84x+21=0

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

84x=-21

x=-21/84

x=-1/4

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