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\(\frac{637\times527-189}{526\times637+448}\)
\(=\frac{637\times526+527-189}{526\times637-189+637}\)
\(=\frac{1+527-189}{1-189+637}\)
\(=\frac{1-189+527}{1-189+637}\)
\(=\frac{527}{449}=\frac{339}{449}\)
~ Hok tốt ~
= 526 x 637 + 637 - 189 / 526 x 637 + 448
= 526 x 637 + 448 / 526 x 637 + 448
= 1
Tk mk nha
526 x 637 + 448 335510
---------------------------- = ------------------------ = 1
637 x 527 -189 335510
Hok tốt nhé
# EllyNguyen #
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) \(\frac{64\times50+44\times100}{27\times38+146\times19}\)
\(=\frac{50\times\left(64+44\times2\right)}{19\times\left(27\times2+146\right)}\)
\(=\frac{50\times\left(64+88\right)}{19\times\left(54+146\right)}\)
\(=\frac{50\times152}{19\times200}\)
\(=\frac{152}{19\times4}\)
\(=\frac{38}{19}\)
\(=\frac{2}{1}\)
\(=2\)
13,25\(\times\)4 + 13,25 \(\times\)5 + 13,25 \(\times\)2 - 13,25
= 13,25 \(\times\)( 4+5+2-1)
= 13,25 \(\times\)10
= 132,5
tym cho mk nhé
75,25 + 75,25 x 362,5 - 263,5 x 75,25
= 75,25 + 75,25 x 362,5 - 263,5 x 75,25 + 1
= 75,25 x ( 362,5 - 263,5 + 1 )
= 75,25 x 100
= 7525
Lời giải:
$3,8\times 4,54+3,6:1,5+5,46\times 3,8-2,1:1,5$
$=(3,8\times 4,54+5,46\times 3,8)+(3,6:1,5-2,1:1,5)$
$=3,8\times (4,54+5,46)+(3,6-2,1):1,5$
$=3,8\times 10+1,5:1,5$
$=38+1=39$
a)1945*240-1000=465800
945+1945*239=465800
b)637*527-189=335510
526*637+448=335510