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x : 3,4 + 5,12 = 7,1
x: 3,4 = 7,1 - 5,12
x : 3,4 = 1,98
x = 1,98 x 3,4
x =6,732
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\(3,42+1,36-x=1,25\)
\(\Rightarrow4,78-x=1,25\)
\(\Rightarrow x=4,78-1,25\)
\(\Rightarrow x=3,53\)
3, 42 + 1, 36 - x = 1, 25
=> 4, 78 - x = 1, 25
x = 4, 78 - 1, 25
x = 3, 53
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lấy 7 h 15 + 4h 45=11h 60p=12h
12h + 1h 28p=13h 28p
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6,32 x 97 + 6,32 x 2 + 6,32
= 6,32 x (97 + 2 + 1)
= 6,32 x 100
=632
Trả lời ::...............................................
1245,04........................................
Hk tốt,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
k nhé
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251/431 x 29/ 37 + 251/431 x 8/ 37
= 251/431 x (29/ 37 + 8 /37)
= 251/ 431 x 37/37
= 251/ 431 x 1 = 251/431
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\(0,127\times3+0,127\times6+0,127\)
\(=0,127\times3+0,127\times6+0,127\times1\)
\(=0,127\times\left(3+6+1\right)\)
\(=0,127\times10\)
\(=1,27\)
= 0,127 x 3 + 0,127 x 6 + 0,127
= 0,127 x ( 3 + 6 + 1 )
= 0,127 x 10
= 1,27
325+6,8+675+3,2=(6,8+3,2)+675+325
=10+1000