9/2x+12=21

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Solution for 9/2x+12=21 equation: 



9/2x+12=21

We move all terms to the left:

9/2x+12-(21)=0



Domain of the equation: 2x!=0

x!=0/2

x!=0

x∈R



We add all the numbers together, and all the variables

9/2x-9=0

We multiply all the terms by the denominator


-9*2x+9=0

Wy multiply elements

-18x+9=0

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

-18x=-9

x=-9/-18

x=1/2

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