17. (15 - 16) + 16 . ( 17 - 20 )
= 17 . 1 + 16 . (-3)
= 17 + (-48)
= -31
=17.(-1)+16.(-2)
=(-17)+(-32)=-49
=17 . ( - 1 ) + 16 .( - 3 )
= -17 + ( -48 )
= - 65
a. 17 . ( 15 - 16 ) + 16 . ( 17 - 20 )
= 17 . ( - 1 ) + 16 . ( - 3 )
= - 17 + ( - 48 )
= - 65
# Học tốt #
\(17.\left(15-16\right)+16.\left(17-20\right)\)
\(=17.\left(-1\right)+16.\left(-3\right)\)
\(=\left(-17\right)+\left(-48\right)\)
\(=\left(-65\right)\)
Chúc bn học tốt
17x(15-16)+16x(17-20)
=[17x(15-16)]+16x(17-20)
=(-17)+(-48)
=-65
17.(15-16)+16.(17-20)=-65