Question

Приведите к заданные дроби к знаменатилю 14 mn
a)58l/28lmn
b)1/2n
c)3/7m
d)27mr/42mn

Answer 1

a) 58l/28lmn=(58l÷2l)/(28lmn÷2l)=29/14mn

b) 1/2n =(1*7m)/(2n*7m)=7m/14mn

C) 3/7m=(3*2l)/(7m*2l)=6l/14ml

d) 27mr/42mn=(27mr÷3)/(42mn÷3)=9mr/14mn