8x=7,8*x+25
8x = 7,8 . x + 25
8x=7,8.x+25
8x-7,8x=25
0,2x=25
x=25:0,2
x = 125
8x = 7,8 . x + 25
\(7,8.x+25=8x\)
\(\Rightarrow8x-7,8x=25\)
\(\Rightarrow0,2x=25\Rightarrow x=125\)
Vậy x= 125
tìm x:
8x=7,8.x+25
8x=7,8x+25
8x-7,8x=25
0,2x=25
1/5x=25
x=25:1/5
x=25.5
x=125
8x- 7,8x = 25
x . 0,2 = 25
x = 25: 0,2
x=125
c) 8x = 7,8.x + 25
c) 8x = 7,8.x + 25
8x=7,8x+25
8x-7,8x=25
0,2x=25
x=25:0,2
x=125
\(\Leftrightarrow0,2x=25\)
\(\Leftrightarrow x=125\)
tìm x
8x= 7,8.x + 25
8x = 7,8 .x+ 25
8x - 7,8 .x = 25
0,2 x = 25
x = 25 : 0,2
x = 125
Tìm x
8x=7,8.x+25
8x=1,8x + 25
8x - 7,8x =25
0,2x=25
x = 25: 0,2
x = 125
tim x biet:
8x=7,8.x+25
Tìm x:
8x = 7,8 + 25
8x = 7,8 + 25
=> 8x = 32,8
=> x = 32,8 : 8
=> x = 4,1
8x = 164/5
x = 41/10 = 4,1
Vậy x = 4,1
\(8x=\frac{164}{5}\)
\(x=\frac{41}{10}=4,1\)
Vậy \(x=4,1\)