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\(8x-2x+8=48\)
\(6x=48-8\)
\(6x=40\)
\(x=\frac{20}{3}\)
vậy \(x=\frac{20}{3}\)
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\(\dfrac{2\cdot3\cdot8}{4\cdot5\cdot6\cdot7}=\dfrac{1}{2}\cdot\dfrac{1}{2}\cdot\dfrac{8}{35}=\dfrac{2}{35}\)
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25 x 20 x 125 x 8 - 8 x 20 x 5 x 15
= ( 8 - 8 ) x 25 x 20 x 125 x 20 x 5 x 15
= 0 x 25 x 20 x 125 x 20 x 5 x 15
= 0 ( vì số nào nhân 0 cũng bằng 0 )
= 500\(\times\)1000\(-\)( 8\(\times\)125 ) \(\times\)( 20\(\times\)5 )
= 500\(\times\)1000\(-\)1000\(\times\)100
= 1000\(\times\)( 500\(-\)100 )
= 1000\(\times\)400
= 400000
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\(1000:\left(x\times25\right)=8\\ x\times25=1000:8\\ x\times25=25\\ x=25:25=1\)
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\(\left(x:30\right)\times8=8\times1350\\ \left(x:30\right)\times8=10800\\ x:30=10800:8\\ x:30=1350\\ x=1350\times30\\ x=40500\)
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a) 60 : (2 x 5) = 60 : 10 = 6
60 : 2 : 5 = 30 : 5 = 6
60 : 5 : 2 = 12 : 2 = 6
Vậy 60 : (2 x 5) = 60 : 2 : 5 = 60 : 5 : 2
b) (24 x 48) : 12 = 1 152 : 12 = 96
(24 : 12) x 48 = 2 x 48 = 96
24 x (48 : 12) = 24 x 4 = 96
Vậy (24 x 48) : 12 = (24 : 12) x 48 = 24 x (48 : 12)
x8 - x x 2=48
x8-x2=48
x(8-2)=48
x6=48
x=48:6
X=8
ủng hộ nha
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x * 8 - x * 2 = 48
x * ( 8 - 2 ) = 48
x * 6 = 48
x = 48 : 6 = 8