90 + x = 100
x = 100 - 90
x = 10
x - 10 = 90
x = 90 + 10
x = 100
x - 90 = 10
x = 10 + 90
x = 100
k
90 + x = 100
x = 100 - 90
x = 10
x - 10 = 90
x = 90 + 10
x = 100
x - 90 = 10
x = 10 + 90
x = 100
90 + x = 100
x = 100 - 90
x = 10
x - 10 = 90
x = 10 + 90
x = 100
x - 90 = 10
x = 10 + 90
x = 100
Xong rùi k nhé
90 + x =100
x = 100 -90
x= 10
x - 10 = 90
x = 90 + 10
x = 100
x - 90 = 10
x = 10 + 90
x = 100
nhé !
1)
90 + x = 100
x = 100 - 90
x = 10
2)
x - 10 = 90
x = 90 + 10
x = 100
3)
x - 90 = 10
x = 10 + 90
x = 100
90 + x = 100
x = 100 - 90
x =10
x-10 = 90
x = 90 + 10
x = 100
x- 90 = 10
x = 10+ 90
x = 100