a/-3/x-1
-3/x=1
x=-3
b/-4/2x-1
-2x=1
x=-1/2
c/13/x-5
13/x=5
x=13/5
d/x-(50x/100+25x/200)=45/4
x-(x/2+x/8)=45/4
x-5/8x=45/4
3/8x=45/4
x=30
e/(x-5).30/100=200x/100+5
(x-5).3/10=2x+5
3x/10-3/2=2x+5
2x-3x/10=-3/2-5
17x/10=-13/2
17x=-65
x=-65/17
f/(3x-1)/(-1/2x+5)=0
=>3x-1=0
3x=1
x=1/3
tim x biet
a)2^x+2 -2^x=96
b)x-(50x/100+25x/200)=111/4
c) (x-5).30/100=200x/100+5
Tìm x:
a) x - (\(\frac{50x}{100}+\frac{25x}{200}\)) = \(11\frac{1}{4}\)
b) (x - 5) . \(\frac{30}{100}\) = \(\frac{200x}{100}\) + 5
Tìm x:
a) \(x-\left(\frac{50x}{160}+\frac{25x}{200}\right)=11\frac{1}{4}\)
b)\(\left(x-5\right)\cdot\frac{30}{100}=\frac{200x}{100}+5\)
Giúp mình nhanh với, cảm ơn các bạn rất nhiều!
Bài 2: Tìm số tự nhiên x, biết:
a) 100-7(x-5)=58 b) 12(x-1):3=43+23
c) 24+5x=75:73 d)5.(x-1)-206=24.4
e) 5(x-4)2-7=13 f) (x+1)+(x+2)+....+(x+30)=795
g) 2x+3 - 3.2x+1=32 h) 221-(3x+2)3=96
Mn bày e gấp
tìm x biết
a, -12.(x-5) +7 . (3-x) = 5
b, 30.(x+2) - 6 .(x-5) - 24.x = 100
c, | 2x-5| = 13
d, (x+1) + ( x+3) + (x+5) +.....+(x+99) = 0
a) 3(x+1) - 2 = 4
b) 5(x-2) + 20 = 45
c) 700 - 7 (x+2) = 140
d) 200 - 5 (2x+4) = 100
e) 5 (2x - 4) + 150 = 250
Tìm x, biết:
a, \(x-\left(\frac{50x}{100}+\frac{25x}{200}\right)=11\frac{1}{4}\) b,\(\left(x-5\right).\frac{30}{100}=\frac{200x}{100}+5\)
c,\(\frac{x+1}{2}=\frac{8}{x+1}\) d, \(x:\left(9\frac{1}{2}-\frac{3}{2}\right)=\frac{0,4+\frac{2}{9}-\frac{2}{11}}{1,6+\frac{8}{9}-\frac{8}{11}}\)
Tìm x biết:
a, (x+1)+(x+2)+...+(x+199)=0
b, (x=30)+(x-29)+(x-28)=11
c, x+(x-1)+(x-2)+...+(x-100)=0
d, 123-3.(x+4)=23
e, [(14x+26).3+55] : 5 =35
f, 720:[41-(2x-5)]= 23.5
g, (2x-4).(48-12x)2=0
h, (3-x).(4-2x).(x+10)=0
i, |x-7|+13=25
k, |x-3|-16=-4
l, 26-|x+9|=-13
Giúp mk nha!
Tìm x:
a) 70-5.(2x-3)=45
b) 6.(5.x+35)=330
c)936-(4.x+24)=72
d)(x+1)+(x+3)+(x+5)=30
e)(x+2)+(x+4)+(x+6)+.....+(x+100)=2650
