X×2+X×0,5=6,25
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![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
12,48: 0,5 \(\times\) 6,25 \(\times\) 4 \(\times\) 2
= 12,48 \(\times\) 2 \(\times\) 2 \(\times\) (6,25 \(\times\) 4)
= 12,48 \(\times\)4 \(\times\) 25
= 12,48 \(\times\) 100
= 1248
12,48:0,5x6,25x4x2=24,96x6,25x4x2=24,96x(6,25x4x2)
=(24,96x100):2
=2496:2=1248
![](https://rs.olm.vn/images/avt/0.png?1311)
X x 2 + X x 0,5 = 6,25
X x (2 + 0,5) = 6,25
X x 2,5 = 6,25
X = 6,25 : 2,5
X = 2,5
Nhớ k cho mình nhé
\(x\cdot2+x\cdot0,5=6,25\)
\(x\cdot\left(2+0,5\right)=6,25\)
\(x\cdot2,5=6,25\)
\(x=6,25:2,5=2,5\)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
Nhớ tick mình nha
Có cách làm nè:12,48:0,5*6,2584*2=1248
2*3,12*1,25:0.25*10=312
1248:312=4
![](https://rs.olm.vn/images/avt/0.png?1311)
6,25 X 8 + 6,25 : 0,5
= 6,25 x 8 + 6,25 x 2
= 6,25 x ( 8 + 2)
= 6,25 x 10
= 62,5
![](https://rs.olm.vn/images/avt/0.png?1311)
12 , 48 : 0 , 5 x 6 , 25 x 4 x 2 2 x 3 , 12 x 1 , 25 : 0 , 25 x 10 = 12 , 48 x 2 x 6 , 25 x 4 x 2 2 x 3 , 12 x 1 , 25 x 4 x 10 = 4 x 5 x 2 10 = 4
![](https://rs.olm.vn/images/avt/0.png?1311)
a) \(210:x=2,1:0,25=8,4\)
\(x=210:8,4=25\)
b) \(x.2+x.0,5=6,25\)
\(2,5x=6,25\)
\(x=6,25:2,5=2,5\)
c) \(x:0,25-x=15,6\)
\(3x=15,6\)
\(x=5,2\)
d) \(x:12,5=3,75.4=15\)
\(x=15.12,5=187,5\)
e) \(x.12,6-x.5,6=42\)
\(7x=42\)
\(x=6\)
g) \(x:0,1-x:4-x.0,75=2,25\)
\(10x-\dfrac{x}{4}-\dfrac{3x}{4}=2,25\)
\(9x=2,25\)
\(x=0,25\)
![](https://rs.olm.vn/images/avt/0.png?1311)
12,48:0,5*6,25*4*2/2*3,12*1,25:0,25*10 =12,48*2*6,25*4*2/2*3,12*1,25*4*10 =12,48*2*6,25*4*2/2*3,12*1,25*5*2 =12,48*2*6,25*4*2/2*12,48*6,25*2 =4
X x 2 + X x 0,5 = 6,25
X x ( 2 + 0,5 ) = 6,25
X x 2,5 = 6,25
X = 6,25 : 2,5
X = 2,5
X x (2+0,5) = 6,25
X x 2,5 = 6,25
X = 6,25 : 2,5 = 2,5
k mk nha