![](https://rs.olm.vn/images/avt/0.png?1311)
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 12 < 6x < 30
=> 6.2 < 6x < 6.5
=> 2<x<5
=> x = 3 hoac x = 4
b) 30:5 < 6x < 24
=> 6 < 6x < 6.4
=> 1<x<4
=> x = 2 hoac x = 3
![](https://rs.olm.vn/images/avt/0.png?1311)
a) x +60+40 =400
x = 400-40-60
x =300
b) (x+25) + 50 = 100:2 +30
(x+25) +50 = 50+30=80
x+25 = 80-50=30
x =30-25
x = 5
a.x+60+40=200
x+100=200
x=200-100
x=100
b.x+25+50=100:2+30
x+75=50+30
x+75=80
x=80-75
x=5
mk nhanh nhất
![](https://rs.olm.vn/images/avt/0.png?1311)
x + 30 = 100
x = 100 - 30
x = 70
Vậy x =70
~ Học tốt ~ K cho mk nhé!
![](https://rs.olm.vn/images/avt/0.png?1311)
a) x + 100 = 50 + 60
x + 100 = 110
x = 110 - 100
x = 10
b) x + 50 = 30 + 60
x + 50 = 90
x = 90 - 50
x = 40
_______________________________________________THE END_____________________________________________________
![](https://rs.olm.vn/images/avt/0.png?1311)
( 10 + 20 + 30 +... + 100 ) x ( a x 1 - a : 1 )
( 10 + 20 + 30 +... + 100 ) x ( a - a)
( 10 + 20 + 30 +... + 100 ) x 0
= 0
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 45 + 15 + x = 100
60 + x = 100
x = 100 - 60
x = 40
b) 40 . 2 + x = 100
80 + x = 100
x = 100 - 80
x = 20
![](https://rs.olm.vn/images/avt/0.png?1311)
x - ( 30 + 4 ) x 3 = 47
x - ( 34 x 3 ) = 47
x - 102 = 47
x = 102 + 47
x = 149
![](https://rs.olm.vn/images/avt/0.png?1311)
a,30 + x = 50
x=50 - 30
x = 20
b, 100 - x = 90
x = 100 - 90
x = 10
^^
a, 30 + x = 50
x = 50 - 30= 20
b, 100 - x = 50
x = 100 - 50 = 50