33-25=????????????????
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\(33,25\times48\%-33,25\times0,4+33,25\times0,02\\ =33,25\times0,48-33,25\times0,4+33,25\times0,02\\ =33,25\times\left(0,48-0,4+0,02\right)\\ =33,25\times0,1\\=3,325\)
=33,25x0,48-33,25x0,4+33,25x0,02
=33,24x(0,48-0,4+0,02)
=33,25x 0,1
=3,325
\(=\dfrac{19}{33}.\left(\dfrac{4}{21}+\dfrac{25}{42}\right)\)
\(=\dfrac{19}{33}.\dfrac{33}{42}\)
\(=\dfrac{19}{42}\)
Lời giải:
$=\frac{19}{33}\times (\frac{4}{21}+\frac{25}{42})$
$=\frac{19}{33}\times (\frac{8}{42}+\frac{25}{42})$
$=\frac{19}{33}\times \frac{33}{42}=\frac{19}{42}$
Quy ước: \(x^0=1\)
Đề bài: \(\left(\dfrac{5}{17}-\dfrac{8}{33}\right)-\left(\dfrac{25}{33}-\dfrac{12}{17}\right)-2023^0\)
\(=\dfrac{5}{17}-\dfrac{8}{33}-\dfrac{25}{33}+\dfrac{12}{17}-1\)
\(=\left(\dfrac{5}{17}+\dfrac{12}{17}\right)-\left(\dfrac{8}{33}+\dfrac{25}{33}\right)-1\)
\(=1-1-1\)
\(=-1\)
=(5/17-8/33)-(25/33-12/17)-2023^0
=5/17-8/33-25/33+12/17-1
=(5/17+12/17)+(-8/33-25/33)-1
=1+(-1)-1
=-1
Nhớ tick cho mình nha pls
-13. (35 - 25) - 35. (25 - 33)
= -13. 10 - 35. (-8)
= -130 - (-280)
= -130 + 280
= 150
a) 17 x 25 + 25 x 33 +25 x 50 = 25 x (17 + 33 + 50)
= 25 x 100 = 2500
b) 125 x 15 -25 x 15 = 15 x (125 - 25)
= 15 x 100 = 1500
\(\dfrac{15}{19}\times\dfrac{25}{33}-\dfrac{15}{19}\times\dfrac{14}{33}\)
\(=\dfrac{15}{19}\times\left(\dfrac{25}{33}-\dfrac{14}{33}\right)\)
\(=\dfrac{15}{19}\times\dfrac{11}{33}\)
\(=\dfrac{5}{19}\)
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