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29 tháng 9 2016

tìm a

a=2 mũ 41 nhân 5 mũ 38 

 a = 241 . 538

7 tháng 2 2018

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

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

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

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

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

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

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

\(=2\)

9 tháng 5 2017

\(\frac{637\cdot526+637-189}{526\cdot637+448}\)=\(\frac{637\cdot526+448}{637\cdot526+448}\)=1

9 tháng 5 2017

= 1 nhé

18 tháng 5 2017

\(\frac{64\cdot50+44\cdot100}{27\cdot38+146\cdot19}\)

\(\frac{32\cdot100+44\cdot100}{27\cdot38+73\cdot38}\)

\(\frac{\left(32+44\right)\cdot100}{\left(27+73\right)\cdot38}\)

\(\frac{56\cdot100}{100.38}\)

\(\frac{56}{38}\)

\(\frac{28}{19}\)

k mình nha

8 tháng 5 2018

phải là 38/19 =2

21 tháng 6 2023

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

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

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

\(=\dfrac{637\times526+448}{526\times637+448}\)

\(=\dfrac{1}{1}\)

\(=1\)

21 tháng 6 2023

\(\dfrac{\left(637\cdot527-189\right)}{\left(526\cdot637+448\right)}\)

\(=\dfrac{\left(637\cdot526+637-189\right)}{\left(526\cdot637+448\right)}\)

\(=\dfrac{637\cdot526+448}{637\cdot526+448}=1\)

18 tháng 7 2019

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

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

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

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

\(=1\)

18 tháng 7 2019

\(\frac{677\times874+251}{678\times874-623}\)

\(=\frac{677\times874+251}{\left(677+1\right)\times874-623}\)

\(=\frac{677\times874+251}{677\times874+874-623}\)

\(=\frac{677\times874+251}{677\times874+251}\)

\(=1\)

18 tháng 7 2019

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c) 637 x 527 - 189=335510  /  526 x 637 + 448=335510

d) 677 x 874 + 251 =591949 /  678 x 874 - 623=591949

học tốt

c, 637x527-189/526x637+448=335918,116

d, 677x874+251/678x874-623=91398,5605

18 tháng 7 2019

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18 tháng 7 2019

2 nick là 1 ng ??????