x/125=69/115
Tìm x biết:x/125=69/115. Tìm x ?
x:125=\(\frac{69}{115}\)
x=\(\frac{69}{115}\times125\)
x=75
\(\frac{x}{125}\)=\(\frac{69}{115}\)
Tìm x là :.......
\(\frac{x}{125}=\frac{69}{115}\)
\(\frac{x}{125}=\frac{3}{5}\)
\(\frac{x}{125}=\frac{75}{125}\)
\(\Rightarrow x=75\)
125:25=5
115:5=23
69:23=3
3*25=75
vậy x = 75
Tim x, biet:
x/125 = 69/115
Ban nao nhanh tay minh se ket ban voi.
(-2)5+[(-69):3+53)].(-2)-8
(-125).2+(-125).8
minh chi bt cau duoi thoi cau tren giup mik nha
Bài 1: a,315+2x=x+115 b,25-(30-x)=25-(-12+125) c,412-(40-2x)=72+x
a) 315 + 2x = x+115
<=> 2x-x = 115-315
<=> x = -200
Vậy x= -200
b) 25-(30-x)=25-(-12+125)
<=> 25-30+x = -88
<=> -5 + x =-88
<=> x = -83
Vậy x=-83
c) 412-(40-2x) = 72+x
<=> 412-40+2x=72+x
<=> 372 + 2x = 72+x
<=> 2x-x = 72-372
<=> x= -300
Vậy x=-300
4.25 x ( x+41.53) -125=53.5
53.2 : ( x - 3.5 ) + 45.8 = 99
( x + 1 )+(x+4)+(x + 7)+(x + 10)....+(x + 28 )= 115
( x + 1 )+(x+4)+(x + 7)+(x + 10)....+(x + 28 )= 115
=> 10x + (1 + 4 + 7 + ..... + 28) = 115
=> 10x + 145 = 115
=> 10x = -30
=> x = -3
Tính x, biết
A) ( x + 49 ) - 115 =0
B) 125 . ( 2 x - 3 ) = 55 : 53
a) (x + 49) - 115 = 0
x + 49 = 0 + 115
x + 49 = 115
x = 115 - 49
x = 66
Vậy x = 66
b) 125 . (2x - 3) = 55 : 53
125 . (2x - 3) = 52 = 25
2x - 3 = 25 : 125
2x - 3 = 1/5
2x = 1/5 + 3
2x = 1/5 + 15/5
2x = 16/5
x = 16/5 : 2
x = 16/5 . 1/2
x = 8/5
Vậy x = 8/5
a) (x+49)-115=0
=>x+49=0+115=115
=>x=115-49=66
b)125.(2x-3)=55:53
=>125.(2x-3)=52
=>125(2x-3)=25
=>2x-3=25:125
=>2x-3=\(\frac{1}{3}\)
=>2x=\(\frac{1}{3}\)+3
=>2x=\(\frac{10}{3}\)
=>x=\(\frac{10}{3}:2\)
=>x=\(\frac{5}{3}\)
a) (x+49)-115=0
=>x+49=0+115=115
=>x=115-49=66
b)125.(2x-3)=55:53
=>125.(2x-3)=52
=>125(2x-3)=25
=>2x-3=25:125
=>2x-3=1/5
=>2x=1/5+3
=>2x=16/3
=>x=16/3:2
=>x=8/3
/x-47/-115=0
315+(146-x)=401
(3x-6).3=34
4.2x-3=125
/ x - 47 / - 115 = 0
x - 47 = 0 + 115
x - 47 = 115
x = 115 + 47
x = 162
215 + ( 146 - x ) = 401
146 - x = 401 - 215
146 - x = 186
x = 186 - 146
x = 40
4 . 2x - 3 = 125
4 . 2x = 125 + 3
4 . 2x = 128
2x = 128 : 4
2x = 32
2x = 25
x = 5 + 0
x = 5
Hok Tốt !!
a/ |x-47| - 115 = 0
|x-47| = 0+115 = 115
=> x-47=115 hay x-47=(-115)
x=115+47=162 hay x=(-115)+47= (- 68)
Vậy x = 162 hay x = -68
b/315 + (164-x) = 401
164-x = 401 - 315 = 86
x= 164-86 = 78
Vậy x=78
c/(3x-6).3=34
3x-6=34 : 3 =33 = 27
3x = 27 + 6 = 33
x= 33 : 3 =11
vậy x=11
d/4.2x - 3 = 125
4.2x = 125 +3 =128
2x= 128 : 4 = 32 = 25
=> x=5
Vậy x=5
Tìm 69% của 125?
69% của 125 là:
\(125\times69\%=86,25\)
125 : 100 x 69 = 86,25
ủng hộ nha fan khởi my
69 % của 125 là :
125 : 100 x 69 = 86,25
Đáp số : 86,25