Question

1990.1990-1992.1998=

(1374.57+687.86):(26.13+74.14)=

(124.237+152):(870+235.122)=

Answer 1

dễ quá lấy máy tính mà ấn

Answer 2

1990.1990-1992.1998=-19916

...............................=100

...............................=1

k mink nha

Answer 3

dễ thì làm đi Pháp Sư Áo Trắng

Answer 4

1990.1990-1992.1988=(1992-2).1990-1992.(1990-2)=(1992.1990-3980)-(1992.1990-3984)=[1992.1990-(3984-4)]-(1992.1990-3984)         = (1992.1990-3984+4)-(1992.1990-3984)=4

Answer 5

   (1374.57+687.86):(26.13+74.14)

= (687.2.57+687.86):[26.13+74.(13+1)]

= [687.(2.57+86)]:[26.13+74.13+74]

= (687.200):[13.(26+74)+74]

= 137400:(13.100+74)

= 137400:1374

= 100

Answer 6

   (124.237+152):(870+235.122)

= [(122+2).237+152]:(870+235.122)

= [122.237+474+152]:(870+235.122)

= [122.(235+2)+626]:(870+235.122)

= (122.235+244+626):(870+235.122)

= (122.235+870):(870+235.122)

= 1

Answer 7

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