a = 0
chuyen dau + va dau - thanh dau x la xong
a tang them 2 don vi bang a + 2 = 2
cuoi cung: 2 x 2 x 123 = 492
vay: tich la 492
tick cho to nhe
cho tich 126 nhan x.neu x tang them 3 don vi thi tich moi la bao nhieu ?
tich 2 so la 48 , biet thua so thu nhat = 4 . neu tang thua so thu 2 len 4 don vi thi tich moi bang bao nhieu ?
cho tich 42x5 neu thua so thu hai tang len 3 don vi thi tich tang bao nhieu?
neu thua so thu nhat tang them 6 don vi giu nguyen thua so thu hai ti tich cua chung la 42 don vi tim tich cua hai so luc dau
Neu tang thua so thu nhat them 3 don vi,giu nguyen thua so thu hai thi tich tang them 21 don vi.Neu tang thua so thu hai them 5 don vi,giu nguyen thua so thu nhat thi tich tang them 240 don vi.Tim tich hai so luc dau?
cho hai so co hieu bang 912 .hoi neu tang so bi tru them 125 don vi va tang so tru them 140 don vi thi hieu moi se bang bao nhieu
thua so thu nhat la 6 . khi tang thua so thu nhat len 4 don vi thi tich tang 36 don vi .hoi khi chua tang thi tich bang bao nhieu
cho hai so co hieu bang 912 . hoi neu tang so bi tru them 125 don vi va tang so tru them 140 don vi thi hieu moi se bang bao nhieu ?
neu giam thua so thu nhat di 6 don vi giu nguyen thua so thu hai thi tich giam di 270 don vi neu tang thua so thu hai them 2 don vi va giu nguyen thua so thu nhat thi tih tang them 16 don vi tim tich 2 so luc dau
