
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.


TL:
23 x 14 + 23 x 16 + 20 x 23 + 50 x 23
= 23 x ( 14 + 16 + 20 + 50 )
= 23 x 100
= 2300
- HT -
Ta có 23 x 14 + 23 x 16 + 20 x 23 + 50 x 23 = 23 x (14 + 16 + 20 + 50 ) = 23 x 100 = 2300

\(\frac{12.23+23.88}{46.3+46.14}\)
\(=\frac{23.\left(12+88\right)}{46.\left(3+14\right)}\)
\(=\frac{23.100}{46.17}\)
\(=\frac{23.2.50}{23.2.17}\)
\(=\frac{50}{17}\)
\(\frac{12x23+23x88}{46x3+46x14}\)
=\(\frac{23x\left(12+88\right)}{46x\left(14+3\right)}\)
=\(\frac{23x100}{46x17}\)
= \(\frac{50}{17}\)

Bài 2:
a, \(\dfrac{5}{23}\) \(\times\) \(\dfrac{17}{26}\) + \(\dfrac{5}{23}\) \(\times\) \(\dfrac{9}{26}\)
= \(\dfrac{5}{23}\) \(\times\) ( \(\dfrac{17}{26}\) + \(\dfrac{9}{26}\))
= \(\dfrac{5}{23}\) \(\times\) \(\dfrac{26}{26}\)
= \(\dfrac{5}{23}\)
b, \(\dfrac{3}{4}\) \(\times\) \(\dfrac{7}{9}\) + \(\dfrac{7}{4}\) \(\times\) \(\dfrac{3}{9}\)
= \(\dfrac{7}{12}\) + \(\dfrac{7}{12}\)
= \(\dfrac{14}{12}\)
= \(\dfrac{7}{6}\)


minh cung dang thac mac cau nay ban nao giup minh voi

\(x:\dfrac{28}{5}=\dfrac{14}{23}\times\dfrac{23}{12}\\ x:\dfrac{28}{5}=\dfrac{7}{6}\\ x=\dfrac{7}{6}\times\dfrac{28}{5}\\ x=\dfrac{98}{15}.\)
X : 28/5 = 14/23 x 23/12
X : 28/5 = 7/6
X = 7/6 x 28/5
X = 98/15

23 x ( 16 + 53 ) - 23 x 43
= 23 x 69 - 23 x 43
= 23 x ( 69 x 43 )
= 23 x 26
= 598

Tích sau tận cùng là mấy chữ số giống nhau:
20 x 21 x 22 x 23 x ... x 48 x 49 x 50
trả lời:
tích đó có tận cùng là 7 chữ số giống nhau
Bổ sung nhé: đó là 7 chữ số 0
chúc bạn học tốt