1- (1/2+1/6+1/5)
=1- (15-5+6)/30
=1- 8/15
=(15-8)/15
=7/15
1- ( 1/2 + 1/6 + 1/5 )
= 1 - ( 2/3 + 1/5)
= 1 - 13/15
= 2/15
k mk nha
1-(\(\frac{1}{2}\)+\(\frac{1}{6}\)+\(\frac{1}{5}\))=1- ( \(\frac{15}{30}\)+\(\frac{5}{30}\)+ \(\frac{6}{30}\)) = 1- \(\frac{26}{30}\)= \(\frac{30}{30}\)- \(\frac{26}{30}\)=\(\frac{4}{30}\)
\(1-\left(\frac{1}{2}+\frac{1}{6}+\frac{1}{5}\right)\)
\(=1-\left(\frac{15}{30}+\frac{5}{30}+\frac{6}{30}\right)\)
\(=1-\frac{26}{30}\)
\(=\frac{30}{30}-\frac{26}{30}\)
\(=\frac{4}{30}\)