[ ( 315 + 372 ) . 3 + ( 372 + 3150 ) . 7 ] : ( 26 . 13 + 74 . 14 )
= [ 687 . 3 + 3522 . 7 ] : ( 338 + 1036 )
= [ 2061 + 24654 ] : 1374
= 26715 : 1374
= \(\frac{8905}{458}\)
[ ( 315 + 372 ) . 3 + ( 372 + 3150 ) . 7 ] : ( 26 . 13 + 74 . 14 )
= [ 687 . 3 + 3522 . 7 ] : ( 338 + 1036 )
= [ 2061 + 24654 ] : 1374
= 26715 : 1374
= \(\frac{8905}{458}\)
[(315+372).3+(372+315).7]:(26.13+74.14)
Bài 3 : tính nhanh
a) 615+185:5
b) [ (315+372).3+1(372+315).7].(26.13+74.14)
Tính:
\(\frac{\left(315+372\right).3+\left(372+315\right).7}{26.13+74.14}\)
\(\frac{\left(315+372\right).3+\left(372+315\right).7}{26.13+74.14}\)
B= \(\frac{\left(315+372\right).3+\left(372+315\right).7}{26.13+74.14}\)
Tính nhanh
\(\frac{\left(315+372\right).3+\left(372+315\right)}{26.13+74.14}\)
thực hiện phép tính:
a, (456.11-912).37:13:74
b,[(315+372).3+(372+315).7]:(26.13+74.14)
(có thể tính nhanh nếu có thể)
Tính: \(\frac{\left(315+372\right).3+\left(372+315\right).7}{26.13+74.14}\)