Question 358618
Find a common denominator, {{{7*5*4=140}}}
{{{(1/7)=(20/140)}}}
{{{(1/5)=(28/140)}}}
{{{(1/4)=(35/140)}}}
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{{{x^(1/7)y^(1/5)z^(1/4)=root(140,(x^20y^28z^35))}}}