4,95 : 0,5 =
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a : 4,55 + 4,95 + 8,25
= ( 4,55 + 8,25 ) + 4,95
= 12,8 + 4,95
= 17,75
b : 2,75 + 4,95 + 2,85
= ( 2,75 + 2,85 ) + 4,95
= 5,6 + 4,95
= 10,55
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Bài 1:
11,75+4,95+8,05
= (4,95+8,05)+11,75
= 13+11,75
=24,75
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4,95 : y = 0,86 (dư 0,048)
=>4,95=0,86.y+0,048
0,86.y=4,95-0,048
0,86.y=4,902
y=4,902;0,86
y=5,7
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\(\frac{4,95}{x}=\frac{1,35}{x}+1,2\)
\(\Rightarrow\frac{99}{20x}=\frac{27}{20x}+\frac{6}{5}\)
\(\Rightarrow\frac{99}{20x}-\frac{27}{20x}=\frac{6}{5}\)
\(\Rightarrow\frac{72}{20x}=\frac{6}{5}\)
\(\Rightarrow\frac{18}{5x}=\frac{6}{5}\)
\(\Rightarrow x=\frac{18}{6}=3\)
Vậy x = 3
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[(-19,95) + (-45,75)] + [(4,95) + (+5,75)]
=> [-65,7] + [10,7]
=> -55
nếu mn thấy đúng nhớ cho mk nha
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2 , 6 : 0 , 25 = 10 , 4
0 , 04 × 4 = 0 , 16
1 , 36 × 100 = 136
4 , 95 : 100 = 0 , 0495
12 , 5 × 4 = 50
0 , 7001 × 1000 = 700 , 1
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2 , 6 : 0 , 25 = 10 , 4 0 , 04 × 4 = 0 , 16 1 , 36 × 100 = 136 4 , 95 : 100 = 0 , 0495 12 , 5 × 4 = 50 0 , 7001 × 1000 = 700 , 1
4,95 : 0,5 = 9,9 OK