a - 5 . 9 + 16
giải:
\(=-45+16=16-45=-29\)
b - 6 . ( - 8 ) - 12
giải:
\(=48-12=36\)
c 8 - 3 . ( 7 + 3 )
giải:
\(=8-21-9=8-30=-22\)
d 12 - 4 ( - 2 -3 )
giải:
\(=12+8+12=24+8=32\)
\(a, - 5 . 9 + 16\)\(=-45+16=-29\)
\(b, - 6 . ( - 8 ) - 12=48-12=36\)
\(c ,8 - 3 . ( 7 + 3 )=8-3.10=8-30=-22\)
\(d, 12 - 4 ( - 2 -3 )=12-4.(-5)=12-(-20)=12+20=22\)