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a) x - 452 = 77 + 48
x - 452 = 125
x= 125 + 452
x= 577
b) x + 58 = 64 + 58
x + 58 = 122
x= 122 - 58
x= 64
c) x - 1 - 2 - 3 - 4 = 0
x= 0 + 4 + 3 + 2 +1
x= 10
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Bài 1 :
a) = 98765
b) = 300657
c) 610000
Bài 2:
a) X + 77 = 1800
X = 1800 - 77
X = 1723
b) 8950 : x = 5
x = 8950 : 5
x = 1790
c) x = 8765 : 5
x = 1753
a,98765 b,300657 c,610000 Bài 2 : a, 17923 b, 1790 c, 1753
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Bài 1:Tính nhanh:
A,35x6-70x3+35=35
B,10+2+6+7+3+1+8+4+9+5=55
Bài 2:Tìm x:
x+779=4793
x=4793-779
x=4014
x-50374=87493
x=87493+50374
x=137867
xx3=6783
x=6783:3
x=2261
x:3=2967
x=2967x3
x=8901
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a,\(x\div6=257-251\)
\(x\div6=6\)
\(x=1\)
b,\(x\times5=360-320\)
\(x\times5=40\)
\(x=8\)
a
x : 6 = 257 - 251
x : 6 = 6
x = 6 x 6
x = 36
b
X x 5 = 360 - 320
X x 5 = 40
X = 40 : 5
X = 8
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x+5/6=20/27
x=20/27-5/6
x=-5/54
vậy............
7/8:x=1/6
x=7/8:1/6
x=21/4
vậy//////
a) \(x+\frac{5}{6}=\frac{8}{9}\cdot\frac{5}{6}\)
\(\Rightarrow x+\frac{5}{6}=\frac{20}{27}\)
\(\Rightarrow x=\frac{20}{27}-\frac{5}{6}\)
\(\Rightarrow x=-\frac{5}{54}\)
Vậy \(x=-\frac{5}{54}\)
b) \(\frac{7}{8}:x=\frac{1}{2}-\frac{1}{3}\)
\(\Rightarrow\frac{7}{8}:x=\frac{1}{6}\)
\(\Rightarrow x=\frac{7}{8}:\frac{1}{6}\)
\(\Rightarrow x=\frac{21}{4}\)
Vậy \(x=\frac{21}{4}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
Lời giải:
$y\times 6+1+3+5+7+9=325$
$y\times 6+(1+3+5+7+9)=325$
$y\times 6+25=325$
$y\times 6=325-25=300$
$y=300:6=50$
![](https://rs.olm.vn/images/avt/0.png?1311)
Lời giải:
$y\times 6+1+3+5+7+9=325$
$y\times 6+25=325$
$y\times 6=325-25=300$
$y=300:6=50$
![](https://rs.olm.vn/images/avt/0.png?1311)
y×6+1+3+5+7+9=325y×6+1+3+5+7+9=325
y×6+(1+3+5+7+9)=325y×6+(1+3+5+7+9)=325
y×6+25=325y×6+25=325
y×6=325−25=300y×6=325−25=300
y=300:6=50
a , x x 6 = 3666
x = 3666 : 6
x = 611
b , x : 6 = 713
x = 713 x 6
x = 4278
a , x x 6 = 3666
x = 3666 : 6
x = 611
b , x : 6 = 713
x = 713 x 6
x = 4278