X-(-2)=6. , -x+23=14-47
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X-(-2)=6 -x+23=14-47
x+2=29-x=-33
TH1:x+2=-33
x=-33-2
x=-35
TH2:29-x=-33
x=29-(-33)
x=62
![](https://rs.olm.vn/images/avt/0.png?1311)
a) x - ( - 2 ) = 6
x = 6 + ( - 2 )
x = 4
b) - x + 23 = 14 - 47
- x + 23 = -33
- x = -33 - 23
- x = -56
x = 56
a) x-(-2)=6
x+2=6
x=6-2
x=4
b)-x+23=14-47
-x+23=-33
-x=(-33)-23
-x=-56
x=56
tick cho mk nha
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a, x -(-2) =6
suy ra x + 2 =6
Suy ra x=4
b, -x + 23 = 14 -47
suy ra -x + 23 = -33
Suy ra -x = -56
suy ra x= 56
k nha ooooook
a) x-(-2)=6
x +2=6
x=6-2
x=3
b) -x+23=14-47
-x+23=-33
-x=-33-23
-x=-56
\(\Rightarrow\)x=56
![](https://rs.olm.vn/images/avt/0.png?1311)
a ) x - ( - 2 ) = 6
x = 6 + ( - 2 )
x = 4
b ) -x + 23 = 14 - 47
-x + 23 = - 33
- x = - 33 - 23
- x = - 56
a)x-(-2)=6
x+2=6
x=6-2
x=3
b)-x+23=14-47
-x+23=-33
-x=(-33)-23
-x=-56
=>x=56
tick cho mk nha bạn Trần Ngọc Mai
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47. (23 + 50)- 23. ( 47+50 )
= 47. 23+ 47. 50- 23. 47 - 23. 50
=47. 50 - 23. 50
= 50 .( 47 -23)
=50. 24 = 1200
![](https://rs.olm.vn/images/avt/0.png?1311)
-x+23=14-47
-x+23=-33
-x=-33-23
-x=-56
k nhe dung lun
-x+23=14-47
=> -x+23= -33
=> -x= -33-23
=> -x= -56
=>x= 56
![](https://rs.olm.vn/images/avt/0.png?1311)
a) - 25 + x = - 14
x = - 14 + 25
x = 11
Vậy x = 11
d) 13 + x - 47 = 23
x = 23 + 47 - 13
x = 70 - 13
x = 57
Vậy x = 57
![](https://rs.olm.vn/images/avt/0.png?1311)
1. A) 225886 + 779 × 8
= 225886 + 6232
= 232118
B) 125 × 5 × 20 × 8
= (125 × 8) × (5 × 20)
= 1000 × 100
= 100000
C) 47286 : 2 + 14765
= 23643 + 14765
= 38408
D) 91428 - 23560 : 5
= 91428 - 4712
= 86716
3. A) 36 × 532 + 63 × 532 + 532
= 532 × (36 + 63 + 1)
= 532 × 100
= 53200
B) 679 × 123 + 679 - 679 × 24
= 679 × (123 + 1 - 24)
= 679 × 100
= 67900
C) 245 × 327 - 245 × 18 - 9 × 245
= 246 × (327 - 18 - 9)
= 245 × 300
= 73500