a) 4 - 2/7 = 28/7 - 2/7
= 26/7
b) 5 - 17/19 = 95/19 - 17/19
= 78/19
c) 35/11 - 2 = 35/11 - 22/11
= 13/11
d) 68/17 - 3 = 4 - 3
= 1
nha bn
a) \(4-\frac{2}{7}=\frac{26}{7}\)
b) \(5-\frac{17}{19}=\frac{78}{19}\);
c) \(\frac{35}{11}-2=\frac{13}{11}\);
d) \(\frac{68}{17}-3=1\)
a) \(4-\frac{2}{7}=\frac{28}{7}-\frac{2}{7}=\frac{26}{7}\)
b)\(5-\frac{17}{19}=\frac{95}{19}-\frac{17}{19}=\frac{78}{19}\)
c)\(\frac{35}{11}-2=\frac{35}{11}-\frac{22}{11}=\frac{13}{11}\)
d)\(\frac{68}{17}-3=\frac{68}{17}-\frac{51}{17}=\frac{17}{17}=1\)
tk chị nha em