1/7(x-21)+5=4

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Solution for 1/7(x-21)+5=4 equation: 



1/7(x-21)+5=4

We move all terms to the left:

1/7(x-21)+5-(4)=0



Domain of the equation: 7(x-21)!=0

x∈R



We add all the numbers together, and all the variables

1/7(x-21)+1=0

We multiply all the terms by the denominator


1*7(x-21)+1=0

Wy multiply elements

7x(x+1=0

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