78 nhân X + X + X = 80 nhân 50
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)
78 x \(x\) + \(x\)+ \(x\)=4000
(78 +1+1) x \(x\)=4000
80 x \(x\)=4000
\(x\)=4000:80
\(x\)=50
![](https://rs.olm.vn/images/avt/0.png?1311)
78.x+x+x=80.50
x.(78+1+1)=4000
x.80=4000
x=4000:80
x=50
\(\left(78+1+1\right)\times x=4000\)
\(80\times x=4000\)
\(x=4000:80\)
\(x=50\)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
600 × x = 78 x 31 + 78 × 24 + 78 × 17 + 22 × 72
600 × x = 78 × (31 + 24 + 17) + 22 × 72
600 × x = 78 × 72 + 22 × 72
600 × x = 72 × (78 + 22)
600 × x = 72 × 100
600 × x = 7200
x = 7200 : 600
x = 12
Vậy x = 12
![](https://rs.olm.vn/images/avt/0.png?1311)
Dấu \("."\)là dấu nhân nhé !!!
\(x+78.x+25.x-x.4=7,6+121,4\)
\(\Rightarrow x.1+78.x+25.x-x.4=200\)
\(\Rightarrow x.\left(1+78+25-4\right)=200\)
\(\Rightarrow x.100=200\)
\(\Rightarrow x=200:100\)
\(\Rightarrow x=2\)
Vậy \(x=2\)
Chúc bạn học tốt !!!
![](https://rs.olm.vn/images/avt/0.png?1311)
1.53x201=10653
2.
a)4 xX-15x4=6x15+X
<=>4x-60=90+x
<=>4x-x=60+90
<=>3x=150
<=>x=50
b(102+28-2x):20-5=1
<=>(130-2x):20=6
<=>130-2x=120
<=>2x=10
<=>x=5
c)1999x-x=1999+1997+1999
<=>1998x=5995
<=>\(x\approx3\)
d)105-5x=150:15
<=>105-5x=10
<=>5x=95
<=>x=19
e)(x+1)+(x+2)+(x+3)+...+(x+6)=78
<=>6x+21=78
<=>6x=57
<=>x=9,5
1) 53x201=53x200+53=10600+53=10653
2a)
4x-15x4=6x15+x
4x-60=90+x
4x-x=90+60
3x=150
x=50
b) x=5
c) x=3
d)x=19
e) x=9,5
![](https://rs.olm.vn/images/avt/0.png?1311)
\(78\times2\div x=39\)
\(\Leftrightarrow156\div x=39\)
\(\Leftrightarrow x=4\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(x:0,2+x:0,125-x\cdot3=78\)
\(=>x:\left(0,2:0,125\cdot3\right)=78\)
\(=>x:4,8=78\)
\(=>x=374,4\)
\(\cdot\)là nhân nha
ti ck mik cầu xin đó
####
Á nhầm:
\(78.x+x+x=80.50\)
\(78.x+x.2=4000\)
\(x.\left(78+2\right)=4000\)
\(x.80=4000\)
\(x=4000:80\)
\(x=50\)