Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
(-25)-(5.x-3)=4
5.x-3 = -25 - 4
5.x-3=-29
5.x=-26
x=-26/5
x=-5,2
\(\frac{1}{5^x}.\frac{1}{5^8}.\frac{1}{25^3}=\frac{1}{5^{60}}\)
=> \(\frac{1}{5^x.5^8.25^3}=\frac{1}{5^{60}}\)
=> \(\frac{1}{5^x.5^8.\left(5^2\right)^3}=\frac{1}{5^{60}}\)
=> \(\frac{1}{5^x.5^8.5^{2.3}}=\frac{1}{5^{60}}\)
=> \(\frac{1}{5^x.5^8.5^6}=\frac{1}{5^{60}}\)
=> \(\frac{1}{5^{x+8+6}}=\frac{1}{5^{60}}\)
=> \(\frac{1}{5^{x+14}}=\frac{1}{5^{60}}\)
=> \(x+14=60\)
=> \(x=46\)
1 . 1 . 1 = 1
5^x 5^8 25^3 5^60
<=> 1 . 1 . 1 = 1
5^x 5^8 5^6 5^60
<=> 1.1.1 = 1
5^x . 5^8 . 5^6 5^60
<=> 1 = 1
5^x+14 5^60
<=> x+14 =60
<=> x = 60-14
=> x = 46
3.5x=60.58+15.254
=>3.5x=12.5.58+3.5.(52)4
=>3.5x=12.59+3.59
=>3.5x=(12+3).519
=>3.5 x=15.59=3.5.59
=>3.5x=3.510
=> x=10
Tk mk
3.5x=60.58+15.254
=> 3.5x=60.58+15.(52)4
=>3.5x=60.58+15.58
=>3.5x=58.(60+15)
=>3.5x=58.75
=>3.5x=58 . 25.3(75=25..3)
=>3.5x=58.52.3
=>3.5x=510.3
=> x=10
Chúc bạn học tốt!
140 : ( x - 8 ) = 7
x - 8 = 140 : 7 = 20
x = 20 + 8
x = 28
* 140 : (X-8)=7
X-8=140:7
X-8=20
x=20+8
x=28
Vậy X =28
* 4(X+41)=400
X+41=400:4
X+41=100
X=100-41
X=59
Vậy x=59
*135-5(X+4)135
5(X+4)=135-35
5(X+4)=100
X+4=100:5
X+4=20
X=20-4
X=16
Vậy X = 16
\(a,\left(\frac{15}{10}x+25\right):\frac{2}{3}=60\)
\(\Rightarrow\frac{15}{10}x+25=60.\frac{2}{3}\)
\(\Rightarrow\frac{15}{10}x+25=40\)
\(\Rightarrow\frac{15}{10}x=40-25\)
\(\Rightarrow\frac{15}{10}x=15\)
\(\Rightarrow x=15:\frac{15}{10}\)
\(\Rightarrow x=15.\frac{10}{15}\)
\(\Rightarrow x=10\)
a) (17.x - 25 ) : 8 = 92 : 65= 92/65
17x - 25 = 92/65.8
17x = 2361/65
x= 2361/65 : 17=2361/1105
b) x- 60 = 2017101 - 2017100
x-60 = 2017
x = 2017 + 60
x = 2077
c) 5x . 30-3x.x = 45
5x.3x.x = 45 + 30 = 75
15x.x = 75
-150 đúng ko
3 x ( - 25 ) + 3 x ( - 5 ) - 60
= 3 x ( - 25 ) + 3 x ( - 5 ) - 3 x 20
= 3 x [ - 25 + ( - 5 ) - 20 ]
= 3 x ( - 50 )
= - 150