Whats the lcd of 6/7, 3/5 and 1/4
[tex] \dfrac{6}{7} \qquad \dfrac{3}{5}\qquad \dfrac{1}{4} \\ \\ lcd= 7*5*4\to lcd= 140 \\ \\ \\ \dfrac{6*20}{7*20} \qquad \dfrac{3*28}{5*28}\qquad \dfrac{1*35}{4*35} \\ \\ \\ \dfrac{120}{140} \qquad \dfrac{84}{140}\qquad \dfrac{35}{140} \\ \\[/tex]
