7/4(X+21)=4x+21

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Solution for 7/4(X+21)=4x+21 equation: 



7/4(X+21)=4X+21

We move all terms to the left:

7/4(X+21)-(4X+21)=0



Domain of the equation: 4(X+21)!=0

X∈R



We get rid of parentheses

7/4(X+21)-4X-21=0

We multiply all the terms by the denominator


-4X*4(X+21)-21*4(X+21)+7=0

Wy multiply elements

-16X^2(X-84X(X+7=0

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