Ta có : \(313^5.299-313.6.36=313^5.\left(299-313.36\right)=313^5.\left(299-\left(299+14\right)\right).3\)
\(=313^5.\left(299-299.36-14.36\right)\)
\(=313^5.\left(299\left(1-36\right)-14.36\right)\)
\(=313^5.\left(35.299-14.36\right)\)
\(=313^5.\left(7.5.299-7.2.36\right)\)
\(=313^5.7.\left(5.299-2.36\right)⋮7\)
Vậy .........
Mình không chắc nha,mình chỉ làm theo như mình hiểu thôi
\(313^5.299-313^6.36\)
=\(313^5.299-313^5.313.36\)
=\(313^5.\left(299-313.36\right)\)
=\(313^5.\left(-10969\right)\)
Mà -10969 \(⋮\)cho 7 => \(313^5.\left(-10969\right)⋮7\)
=>\(313^5.299-313^6.36⋮7\)
