-39 . ( 5 - 99 ) + 99 . ( 10 - 39 )
= -39 . ( -94 ) + 99 . ( -29 )
= 3666 + ( -2871 )
= 795
\(-39.\left(5-99\right)+99.\left(10-39\right)\)
\(=\left(-39\right).\left(-94\right)+99.\left(-29\right)\)
\(=3666+\left(-2871\right)=795\)
-39. (5 - 99) + 99. (10 - 39)
=(-39) . [5 + (-99)] + 99. [10 + (-39)]
=[(-39) . (-99)] + [(-39) . 5] + 99.10 + [99 . (-39)]
=99 . (39+10) + (-39) . (99 + 5)
= 99 . 49 + (-39) . 104
-39 . ( 5 - 99 ) + 99 . ( 10 -39 )
= -39 .5 -39 . -99 + 99 . 10 + 99 . -39
= [ -39 . -99 + 99 . -39 ] - 39 . 5 + 99 . 10
= 0 - 39 . 5 + 99 . 10
= 0 - 39 . 5 + 198 . 5
= 0 + ( 198 - 39 ) . 5
= 0 + 159 . 5
= 0 + 795
= 795