(x + [tex]3\frac{2}{7}[/tex] ) : [tex]\frac{21}{6} = 5\frac{1}{3}[/tex]
(x + [tex]\frac{23}{7}[/tex] ) : [tex]\frac{21}{6} = \frac{16}{3}[/tex]
x + [tex]\frac{23}{7}[/tex] = [tex]\frac{16}{3}[/tex] • [tex]\frac{21}{6}[/tex]
x + [tex]\frac{23}{7} = \frac{56}{3}[/tex]
x = [tex]\frac{56}{3} - \frac{23}{7}[/tex]
x = [tex]\frac{392}{21} - \frac{69}{21}[/tex]
x = [tex]\frac{323}{21}[/tex]
