2/5*x-3/2=1/3
=>2/5*x=1/3+3/2
=>2/5*x=11/6
=>x=11/6:2/5
=>x=55/12
KL:Vậy...
Đúng 0
Bình luận (0)
Các câu hỏi tương tự
tìm x :a,5/9xX-1=8/9,b,X+Xx1/3:2/9+x:2/7=252,c,2/5+3/5xX=2/3
Tìm x: a, 213-2x X=47
b, 3x(x+1)-300=906
c,7/3-2/3xX=1/4
d,2/5xX+7/8=2
1/5xX+1/8xX=3/4
b)0,5xx+2/3xx+2/3=7/12
c)3/5-2/15:x=1/2
d)50%xx-2va1/2=2va5/6
e)(2va4/5xx-50):2/3-51
f)(4va1/2-2xx)x3va2/3=11/15
g)02/5-(2va1/2xx-3):15=1/10
h)(3/4+x)x1/1+5va1/6-1va1/6
b)0,5xx+2/3xx+2/3=7/12
c)3/5-2/15:x=1/2
d)50%xx-2va1/2=2va5/6
e)(2va4/5xx-50):2/3-51
f)(4va1/2-2xx)x3va2/3=11/15
g)02/5-(2va1/2xx-3):15=1/10
h)(3/4+x)x1/1+5va1/6-1va1/6
BÀi 7 tìm số tự nhiên x biết
d) 35 : ( 2x x + 3) - 3 = 11 - 9 x 2,5 x 0,4; 8xx+ 4xx- 44=100; 5xx+ 3xx+ 4 = 68
e) ( x+1) + ( x+2) ....... + ( x + 211) = 23632
f) (1+3+5+7+........+2009) + x = 1010026
bài 8: tính hợp lí
( 98x 7676 - 9898 x 76) : ( 2+4 +6+........+200)
Tìm x :
(X - 7)\(\times\)22=(5xX ) +33
7,75 - ( 0,5\(\times\) X : 5 - 6,2) = 5
7 : ( 3,8\(\times\) X-57 / 19 + 3) = 1,75
Xem chi tiết
Tìm x
\(1988< 5xX-2< 1998\)
tìm X
3x(5xX-1) = 10