_{10101(39-1)/10101(50+7)=2/3 bn}

=  ( 3 x 7 x 13 x 37 ) x 39 - 10101 / 10101 x ( 50 + 7 )

=  10101 x 39 - 10101 / 10101 x 57

=   10101 x ( 39 - 1 ) / 10101 x 57

=    10101 x 38 / 10101 x 57

=    2/3

Nhớ k nha ! 

Đặt \(A=\frac{3\cdot7\cdot13\cdot37\cdot39-10101}{505050-70707}\)

\(A=\frac{\left(3\cdot7\cdot13\cdot37\right)\cdot39-10101\cdot1}{50\cdot10101+7\cdot10101}\)

\(A=\frac{10101\cdot39-10101\cdot1}{10101\cdot\left(50+7\right)}\)

\(A=\frac{10101\cdot\left(39-1\right)}{10101\cdot57}\)

\(A=\frac{10101\cdot38}{10101\cdot57}\)

\(A=\frac{38}{57}=\frac{38:19}{57:19}=\frac{2}{3}\)

rút gọn cái gì

so to the ai ma rut gon đc

các bn chuẩn bị gậy để chống sau khi rút gọn dc con số này nhé 

A=10101*39-10101/505050+70707

A=10101(39-1)/10101(50+7)

A=38/57=2/3(chia cả tử và mẫu cho 10101)

cho tui đáp số đây đáp số kia lộn

\(\frac{45}{6}\)

45/6

3.7.13.37.39-10101/505050+70707

=393939-10101/505050+70707

=10101.39-10101/505050+70707

=10101(39-1)/10101.50 +70707

=10101.38/10101+70707

=38+70707=70745

=> \(\frac{10101.39-10101}{10101\left(50-7\right)}\)

=> \(\frac{10101\left(39-1\right)}{10101\left(50-7\right)}\)

=>  \(\frac{38}{43}\)

\(\frac{2}{3}\)

\(\frac{3.7.13.37.19-10101}{505050+70707}\)=\(\frac{10101.39-10101}{10101.50+10101.7}\)=\(\frac{10101.\left(39-1\right)}{10101.\left(50+7\right)}\)=\(\frac{38}{57}\)=\(\frac{2}{3}\)

\(\frac{3.7.13.37.39-10101}{505050+70707}\)

\(=\frac{\left(3.7.13.37\right).39-10101}{50.10101+7.10101}\)

\(=\frac{10101.39-10101.1}{\left(50+7\right).10101}\)

\(=\frac{\left(39-1\right).10101}{57.10101}\)

\(=\frac{38.10101}{57.10101}\)

\(=\frac{38}{57}=\frac{38:19}{57:19}=\frac{2}{3}\)