![](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)
20 + 20 + 20 + 20 + 20 + 50 + 50 + 50 + 50
= 20 x 5 + 50 x 4
= 100 + 50 x 4
= 100 + 200
= 300
x + 50 - 20 = 50 + 20
x + 50 - 20 = 70
x + 50 = 70 + 20
x + 50 = 90
x = 90 - 50
x = 40
Ủng hộ tíck mik nha !!!
![](https://rs.olm.vn/images/avt/0.png?1311)
x+20=20+50+50
x+20=120
x=120-20
x=100
k nhé trang rùi mình k lại
x + 20 = 20 + 50 + 50
x + 20 = 70 + 50
x + 20 = 120
x = 120 - 20
x = 100
![](https://rs.olm.vn/images/avt/0.png?1311)
x + 20 = 50 + 50 + 50
x + 20 = 50 x 3
x + 20 = 150
=> x = 130.
x+20=3x50=150
x=150-20=130
x=130
thu lai 130+20 = 50+50+50=150
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
x - 20 = 50 + 50
x - 20 = 100
x = 100 + 20
x = 120
tk nha
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
x + 50 = 50 + 20
x + 50 = 70
x = 70 - 50
x = 20
tk mk nha mk tk bạn rồi
x + 50 = 50 + 20
x + 50 = 70
x = 70 - 50
x = 20
ai tk mk mk tk lại
![](https://rs.olm.vn/images/avt/0.png?1311)
20 + 60 + 50 + 80 + 90 + 10 + 50 + 60 x 10
= (20 + 80) + (50 + 50 ) + (90 + 10 ) + 600 + 60
= 100 + 100 + 100 + 660
= 960
=(20+80)+(50+50)+(90+10)+(60*10)+60
=100+100+100+600+60
=960
giao hoán của phép tính
50 + 90 = .........
90 + 600 = ..........
tìm x
x : 2 = 50 + 20
x + 25 = 50 x 2
![](https://rs.olm.vn/images/avt/0.png?1311)
\(50+90=90+50=140\)
\(90+600=600+90=690\) .
\(x:2=50+20\)
\(\frac{x}{2}=70\)
\(x=70.2=140\)
\(x+25=\frac{100}{25}\)
\(x+25=4\)
\(x=4-25\)
\(x=-21\)
50 + 90 = 90 + 50
90 + 600 = 600 + 90
Tìm x
x : 2 = 50 + 20
x : 2 = 70
x = 70 * 2
x = 140
x + 25 = 50 *2
x + 25 = 100
x = 100 - 25
x = 75
x + 50 = 50 + 20
x + 50 = 70
x = 70 - 50
x = 20
x + 50 = 50 + 20
x + 50 = 70
x = 70 - 50
x = 20
ai tk mk mk tk lại