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5,8 : 0,1 = 58
10,81 : 0,001 = 10810
62,03 : 0,1 = 620,3
16 : 0,5 = 32
25 : 0,25 = 100
24 : 0,125 = 192
8,9 : 0,01 = 890
4,75 : 0,01 = 475
0,67 : 0,01 = 67
8 : 0,2 = 40
13 : 0,25 = 52
y:0,125+y:0,25+y:0,5+y:0,1+y:0,01=12,4
Xét vế trái:
y:0,125+y:0,25+y:0,5+y:0,1+y:0,01
=y*8+y*4+y*2+y*10+y*100
=y*(8+4+2+10+100)
=y*124
->y:0,125+y:0,25+y:0,5+y:0,1+y:0,01=y*124
y*124=12.4
y=12.4:124
y=0.1
\(25,36:0,5+25,36:0,25+25,36:0,125\)
\(\Rightarrow\)\(25,36:\left(0,5+0,25\right)+25,36:0,125\)
\(\Rightarrow25,36:0,75+25,36:0,125\)
\(\Rightarrow25,36:\left(0,75+0,125\right)\)
\(\Rightarrow25,36:0,875\)
...........
a x 0,1 = a : \(\dfrac{1}{10}\)
a : 0,01 = a x \(\dfrac{1}{100}\)
a x 1000 = a : 0,001
a : 1000 = a x \(\dfrac{1}{1000}\)
\(x\) : 0,2 = \(x\) x \(\dfrac{1}{5}\)
\(x\) : 0,25 = \(x\) x \(\dfrac{1}{4}\)
\(x\) : 0,125 = \(x\) x \(\dfrac{1}{8}\)
\(x\) : 0,5 = \(x\) x \(\dfrac{1}{2}\)
x + x : 0,5 + x : 0,25 + x : 0,125 = 150
\(x\) x 1 + \(x\) x 2 + \(x\) x 4 + \(x\) x 8 = 150
\(x\) x (1 + 2 + 4 + 8) = 150
\(x\) x 15 = 150
\(x\) = 150 : 15
\(x=10.\)
x + x : 0,5 + x : 0,25 + x : 0,125 = 150
X x 1 + X x 2 + X x 4 + X x 8 = 150
X x (1 + 2 + 4 + 8) = 150
X x 15 = 150
+> X = 10
\(25,36\div0,5+25,36\div0,25+25,36\div0,125\)
\(=25,36\div\frac{5}{10}+25,36\div\frac{25}{100}+25,36\div\frac{125}{1000}\)
\(=25,36\div\frac{1}{2}+25,36\div\frac{1}{4}+25,36\div\frac{1}{8}\)
\(=25,36\cdot2+25,36\cdot4+25,36\cdot8\)
\(=25,36\cdot(2+4+8)\)
\(=25,36\cdot14=355,04\)
14,01:0,02=700,5
15,03:0,01=1503
15,18:0,25=60,6
6,09:0,125=48,72
16,31:0,5=32,62
14,01:0,02=700,5
15,03:0,01=1503
15,18:0,25=60,72
6,09:0,125=48,72
16,31:0,5=32,62