Giải thích các bước giải:
a) `(-5)/7 . 31/33+(-5)/7 . 2/33 + 1 5/17`
`=(-5)/7 . (31/33+2/33) + 22/17`
`=(-5)/7 + 22/17=69/119`
b) `4/7+3/7 . (-2/3)=4/7+(-2/7)=4/7-2/7=2/7`
c) `(9^2 . 3^3)/3^7 . 2018`
`=(3^4 . 3^3)/3^7 . 2018`
`=3^7/3^7 . 2018`
`=2018`
d) `3-(-7/8)^0 + (1/2)^3 . 16`
`=3-1+1/2^3 . 2^4`
`=2+2^4/2^3`
`=2+2=4`
