Question 570823
{{{(1/x)-(8/21)=(3/7x)}}}

Add 8/21 to both sides of the equation

{{{(1/x)=(3/7x)+(8/21)}}}

add -(3/7x) to both sides

{{{(1/x)-(3/7x)=8/21}}}

LCD = 7x

7-3=7x*8/21

4=56x/21

multiply by 21
84= 56x
/56
x=3/2

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