( 1996x 1998+ 1997x11+ 1985): ( 1997x 1996+ 1996x 1995)
Giải thích
=(1996x1998+1996×11+11+1985):(1996×(1997+1995)) = (1996×(1998+11+1)): (1996×2×1996) = (1996×2010):(1996×2×1996) = 1005:1996
=(1996x1998+1996×11+11+1985):(1996×(1997+1995)) = (1996×(1998+11+1)): (1996×2×1996) = (1996×2010):(1996×2×1996) = 1005:1996