Toán Tính nhanh:-(-2009+97)-74.(-18)+74.(-118)-2009-3 04/07/2021 By Iris Tính nhanh:-(-2009+97)-74.(-18)+74.(-118)-2009-3
-(-2009+97)-74.(-18)+74.(-118)-2009-3 =2009-97+74.18-74.118-2009-3 =(2009-2009)-(97+3)+(74.18-74.118) =-100+74.(18-118) =-100-74.100 =-100.(1+74) =-100.75 =-7500. Trả lời
-(-2009 + 97) – 74 . (-18) + 74 . (-118) – 2009 – 3 = 2009 – 97 + 74 . 18 + 74 . (-118) – 2009 – 3 = (2009 – 2009) + (-97 – 3) + 74 . [18 + (-118)] = 0 + (-100) – 74 . (-100) = -100 – 7400 = -7500 Trả lời
-(-2009+97)-74.(-18)+74.(-118)-2009-3
=2009-97+74.18-74.118-2009-3
=(2009-2009)-(97+3)+(74.18-74.118)
=-100+74.(18-118)
=-100-74.100
=-100.(1+74)
=-100.75
=-7500.
-(-2009 + 97) – 74 . (-18) + 74 . (-118) – 2009 – 3
= 2009 – 97 + 74 . 18 + 74 . (-118) – 2009 – 3
= (2009 – 2009) + (-97 – 3) + 74 . [18 + (-118)]
= 0 + (-100) – 74 . (-100)
= -100 – 7400 = -7500