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\(8\times\frac{3333}{2424}\times54\)
\(=8\times\frac{11}{8}\times54\)
\(=11\times54\)
\(=594\)
![](https://rs.olm.vn/images/avt/0.png?1311)
a)5/12+25/3x1/4=5/12+25/12=5/2
b)8X3333X54/2424=1439856/2424=594
C)12/5-2/5X25/6=12/5-5/3=11/15
![](https://rs.olm.vn/images/avt/0.png?1311)
8x3333/2424x54
=8x 3333:303/2424:303 x54 (Vì 3333/2424 chưa rút gọn)
=8x11/8x54
=11x54=594
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1+2+4+6+7+8+9+x = 8*5 +12x
=> 12x-x = 1+2+4+6+7+8+9 + 8*5
=> 11x = 77
=> x = 7
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\(\frac{5}{12}\)x \(\frac{1}{7}\)+ \(\frac{2}{9}\)
= \(\frac{5}{84}\)+ \(\frac{2}{9}\)
= \(\frac{213}{756}\)
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a: \(\dfrac{15}{90}=\dfrac{15:3}{90:3}=\dfrac{5}{30}=\dfrac{5:5}{30:5}=\dfrac{1}{6}\)
b: \(\dfrac{15}{90}=\dfrac{15\cdot2}{90\cdot2}=\dfrac{30}{180}\)
\(\dfrac{15}{90}=\dfrac{15\cdot3}{90\cdot3}=\dfrac{45}{270}\)
\(\dfrac{15}{90}=\dfrac{15\cdot4}{90\cdot4}=\dfrac{60}{360}\)
\(\dfrac{15}{90}=\dfrac{15\cdot5}{90\cdot5}=\dfrac{75}{450}\)
\(\dfrac{15}{90}=\dfrac{15\cdot6}{90\cdot6}=\dfrac{90}{540}\)
\(12\times\left(3895:5-90\right)\times54\)
\(=12\times\left(779-90\right)\times54\)
\(=12\times689\times54\)
\(=446472\)
12 x ( 3895 : 5 - 90 ) x 54
= 12 x ( 779 - 90 ) x 54
= 12 x 689 x 54
= 8268 x 54
= 446472