-(-3793+289)+(-3793+289)+(-37)

=3793-289-3793+289-37

= (3793-3793) +(289-289)-37

=-37

tìm a

a=2 mũ 41 nhân 5 mũ 38 

 a = 2⁴¹ . 5³⁸

a) \(\frac{637\times527-189}{526\times637+448}\)

\(=\frac{637\times\left(526+1\right)-189}{526\times637+448}\)

\(=\frac{637\times526+637-189}{526\times637+448}\)

\(=\frac{637+526+448}{526\times637+448}\)

\(=1\)

b) \(\frac{64\times50+44\times100}{27\times38+146\times19}\)

\(=\frac{50\times\left(64+44\times2\right)}{19\times\left(27\times2+146\right)}\)

\(=\frac{50\times\left(64+88\right)}{19\times\left(54+146\right)}\)

\(=\frac{50\times152}{19\times200}\)

\(=\frac{152}{19\times4}\)

\(=\frac{38}{19}\)

\(=\frac{2}{1}\)

\(=2\)

= 58.( -47 +44)+58 .103 

= 58. -3 +58 .103

= 58. (103-3)

= 58 .100 

= 5800

= 58.( -47 +44)+58 .103 

= 58. -3 +58 .103

= 58. (103-3)

= 58 .100 

= 5800

+/ \(\frac{16.25+44.100}{29.96+142.48}=\frac{16.25+4.11.100}{29.96+71.2.48}\)            +/\(\frac{1996.1995-996}{1000+1996.1994}=\frac{\left(1995+1\right).1995-996}{1000+1996\left(1995-1\right)}\)

\(=\frac{400+400.11}{29.96+71.96}=\frac{400\left(1+11\right)}{96\left(29.71\right)}\)                        \(=\frac{1995.1995+1995-996}{1000+1996.1995-1996}\)

\(=\frac{400.12}{96.2059}=\frac{50.96}{96.2059}=\frac{50}{2059}\)                              \(=\frac{1995\left(1995+1\right)-996}{1996.1995-996}=1\)

T i c k cho chị nha ^^ Lát chị làm tiếp cho giờ chị đi ăn cơm đã ^.<

\(\frac{1996.1995-996}{1000+1996.1994}=\frac{\left(1995+1\right).1995-996}{1996\left(1995-1\right)+1000}\)

\(=\frac{1995.1995+1995-996}{1996.1995-1996+1000}\)

\(=\frac{1995\left(1995+1\right)-996}{1995.1996-996}\)

\(=\frac{1995.1996-996}{1995.1996-996}=1\)

44x46-2x46+58x46=4600

\(=44\cdot46-2\cdot46+58\cdot46=4600\)

44x46-2x46+58x46=4600

2384+3793=6177

=                  1677

6177

k cho minh nha

chuc ban hoc tot

. là dấu nhân
\(58.75+58.50.25\)
\(=58.75+58.1250\)
\(=58.\left(75+1250\right)\)
\(=58.1325=76850\)