-4/7(21-14x)=4

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Solution for -4/7(21-14x)=4 equation: 



-4/7(21-14x)=4

We move all terms to the left:

-4/7(21-14x)-(4)=0



Domain of the equation: 7(21-14x)!=0

x∈R



We add all the numbers together, and all the variables

-4/7(-14x+21)-4=0

We multiply all the terms by the denominator


-4*7(-14x+21)-4=0

Wy multiply elements

-28x(--4=0

We use the square of the difference formula

-28x(+4=0

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