48 . 19 + 48 . 115 + 134 . 52
=48.(19+115)+134.52
=48.134+134.52
=134.(48+52)
=134.100
=13400
k cho minh nha
48 . 19 + 48 . 115 + 134 . 52
\(=\left[48\text{ }.\text{ }\left(19+115\right)\right]+134\text{ }.\text{ }52\)
\(=48\text{ }.\text{ }134+134\text{ }.\text{ }52\)
\(=\left(48+52\right).\text{ }134\)
\(=100\text{ }.\text{ }134\)
\(=13400\)
48 × 19 + 48 × 115 + 134 × 52
= 48 × (19 + 115) + 134 × 52
= 48 × 134 + 134 × 52
= 134 × ( 48 + 52 )
= 134 × 100
= 13400