46.35-35.146 -42.31+31.(-57)-31 57.(-202)-202.(-470 (-3)*2.45 -|-105|.45 14.(54-5)-54.(14-5) 48.(1987-52)+52.(1987+48)

0 bình luận về “46.35-35.146 -42.31+31.(-57)-31 57.(-202)-202.(-470 (-3)*2.45 -|-105|.45 14.(54-5)-54.(14-5) 48.(1987-52)+52.(1987+48)”

1. Đáp án+Giải thích các bước giải:

   $\\1)46.35-35.146\\=35.(46-146)\\=35.(-100)\\=-3500$

   $\\2)-42.31+31.(-57)-31\\=31.(-42-57-1)\\=31.(-100)\\=-3100$

   $\\3)57.(-202)-202.(-470)\\=(-57).202-202.(-470)\\=202.(-57+470)\\=202.413\\=83426$

   $\\4)4.(54-5)-54.(14-5)\\=14.54-14.5-54.14-54.5\\=14.(54-54)+5.(-14-54)\\=0+5.(-68)\\=-340$$5)(-3).2.45 -|-105|.45\\=(-6).45-105.45\\=45.(-6-105)\\=45.(-111)\\=-4995$

   $\\6)48.(1987-52)+52.(1987+48)\\=48.1987-48.52+52.1987+52.48\\=1987.(48+52)+48.(-52+52)\\=1987.100+0\\=198700$

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