\(=\dfrac{35-27}{40}=\dfrac{8}{40}=\dfrac{1}{5}\)
\(=\dfrac{55+17.3}{60}=\dfrac{106}{60}=\dfrac{53}{30}\)
\(=\dfrac{6+20+7.15}{30}=\dfrac{131}{30}\)
Đúng 3
Bình luận (1)
a: 7/8-27/40=35/40-27/40=8/40=1/5
b: 11/12+17/20=55/60+51/60=106/60=53/30
c: 1/5+2/3+7/2=6/30+20/30+105/30=131/30
Đúng 1
Bình luận (0)
