(128 - X) x23 =874
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NL
1
29 tháng 6 2015
\(\frac{677\times874+251}{678\times874-623}\)\(=\frac{677\times874+251}{\left(677+1\right)\times874-623}\)\(=\frac{677\times874+251}{677\times874+1\times874-623}\)\(=\frac{677\times874+251}{677\times874+874-623}=\frac{677\times874+251}{677\times874+251}=1\)
LM
Lê Minh Vũ
VIP
18 tháng 7 2021
\(\frac{677.874+251}{678.874-623}\)
\(=\frac{677.874+251}{\left(677+1\right).874-623}\)
\(=\frac{677.874+251}{677.874-1.874-623}\)
\(=\frac{677.874+251}{677.874+874-623}\)
\(=\frac{677.874+251}{677.874+251}\)
\(=1\)
Hok tốt
YM
16
DV
5
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
\(\frac{677\times874+251}{678\times874-623}\)
\(=\frac{677\times874+251}{\left(677+1\right)\times874-623}\)
\(=\frac{677\times874+251}{677\times874+874-623}\)
\(=\frac{677\times874+251}{677\times874+251}\)
\(=1\)
NB
1
TM
18 tháng 7 2019
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TQ
3
18 tháng 7 2019
c) 637 x 527 - 189=335510 / 526 x 637 + 448=335510
d) 677 x 874 + 251 =591949 / 678 x 874 - 623=591949
học tốt
18 tháng 7 2019
c, 637x527-189/526x637+448=335918,116
d, 677x874+251/678x874-623=91398,5605
DT
5
TM
18 tháng 7 2019
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18 tháng 7 2021
Ta có: \(x+133324=\left(2349+24\right)\cdot23\)
\(\Leftrightarrow x+133324=54579\)
hay x=-78745
18 tháng 7 2021
x + 133324 = (2349 + 24)x23
x + 133324 = 54579
x = 54579 - 133324
x = -78745
nhanh giúp mik nhé
hhhhhhhhhhhhhhhhhhhhhu