=312(-18-81-1)=312x(-100)=-31200
\(\text{312.(-18)+312.(-81)-312}.\)
\(=312\left(-18-81-1\right)=312\left(-18-82\right)=312.\left(-100\right)=-31200\)
312.(-18)+312.(-81)-312
=312(-18-81-1)
=312x(-100)
=-31200
312.(-18)+312.(-81)-312
= 312.(-18)+312.(-81)-312.1
=312 .(18+81+1)
=312 . 100
=31200
Đáp án là
312(-18-81-1) =312x(-100)=-31200