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a) 7,25×6,93+7,25×2,07+7,25×1
=7,25×(6,93+2,07+1)
=7,25×10
=72,5
b) 24,8:0,5+24,8×8
=24,8×2+24,8×8
=24,8×(2+8)
=24,8×10
=248
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
20,49 + x = 7,25 x 6,28
20,49 + x = 45,53
x = 45,53 - 20,49
x = 25,04
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
X x 7,25 + 244,75=749,35
X x 7,25=749,25 - 244,75
X x 7,25=504,5
X=504,5 : 7,25
X=69,5862069
X x 7,25 + 2,75 x 89 = 149,87 x 5
X x 7,25 + 2,75 x 89 = 749,35
X x 7,25 + 2,75 = 749,35 : 89
X x 7,25 + 2,75 = 8,41
X x 7,25 = 8,41 - 2,75
X x 7,25 = 5,66
X = 5,66 : 7,25
X = 0,78
Vậy X = 0,78
![](https://rs.olm.vn/images/avt/0.png?1311)
Trả lời :
7,25 x (y + 5,6 ) = 58
y + 5,6 = 58 : 7,25
y + 5,6 = 8
y = 8 - 5,6
y = 2,4
Fighting !!
Học tốt nha !!!
7,25.(y+5,6)=58
y+5,6=58:7,25
y+5,6=8
y=8-5,6
y=2,4
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\Leftrightarrow x\times\left(7,25+27,5\right)=30\)
\(\Leftrightarrow x=\dfrac{30}{34,75}=\dfrac{120}{139}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
A = (8,85 - 7,25 ) * 0,25 / (5,35 - 4,85 ) * 2,5
A=2
k minh nha!
TL:
7,25 x 207 = 1500.75
HT