90 - 20 = 70
40 - 90 = -50
50 - 70 = -20
k mk nha ^_-
90 - 20 =70
40 - 90 = -50
50 - 70 = -20
90 - 20 = 70
40 - 90 = -50.
50 - 70 = -20.
\(90-20=70\)
\(40-90=-50\)
\(50-70=-20\)
90-20=70
40-90=-50
50-70=-20
ai k mình mình k lại
90 - 20 = 70
40 - 90 = -50
50 - 70 = -20
90 - 20 =70
40 - 90 = -50
50 - 70 = -20
k cho mk nha
90 - 20 = 70
40 - 90 = -50
50 - 70 = -20
90-20=70
40-90= -50
50-70=-20
k mik nhé
90 - 20 = 70
40 - 90 = - 50
50 - 70 = - 20