\(\left(252+2\cdot28-5\cdot28\right):28\)
\(=\left(28\cdot9+2\cdot28-5\cdot28\right):28\)
\(=28\cdot\left(9+2-5\right):28\)
\(=6\)
(252+2.28-5.28):28
=252:8+2.28:28-5.28:28
=9+2-5
=6
(252+2*28-5*28):28
= (28*9+2*28-5*28):28
= 28*(9+2-5):28
= 28*6:28
=28:28*6
=1*6
=6
ủng hộ mk nha mn
(252+2·28−5·28):28
=(28·9+2·28−5·28):28
=28·(9+2−5):28
=6