Thực hiện phép tính: a) 6 5/12 : 2 3/4 + 11 1/4 (1/3 - 1/5) b) 1 13/15 .0,75
Giải thích
a)
6512:234+111413−15=7712:114+454.215=73+32=236
b)
11315⋅0,75−1120+25%:75=2815⋅34−1120+14:75=75−45⋅57=75−47=2935
a)
6512:234+111413−15=7712:114+454.215=73+32=236
b)
11315⋅0,75−1120+25%:75=2815⋅34−1120+14:75=75−45⋅57=75−47=2935