1/2 .x + 3/5 . (x - 2) = 3
(1/2 . x + 3 / 5 . x) - 3 / 5 . 2 = 3
x .(1 / 2 + 3 / 5 ) - 6 / 5 = 3
x . 11/10 = 3 + 6 / 5
x . 11 / 10 = 21 / 5
x = 21 / 5 . 10 / 11
x = 42 / 11
Vậy x = 42 / 11
Nếu tớ tính sai thì cho tớ xin lỗi.
Tìm x
a, ( 3 . x -1 ) . ( -1/2 .x + 5 ) = 0
b, 3. ( x - 1/2 ) - 5 ( x + 3 /5 ) = x + 1 /5
c, -5 . ( x + 1/5 ) - 1/2 . ( x - 2/3 ) = 3/2 . x - 5/6
d,3. ( 3 . x - 1/2 ) mũ 3 + 1/9 = 0
Tìm x biết:
a) x:( 1/2 + 2/3)= 6/5
b) (x- 1/2)- 5( x-2/3)= 3/2 x
c) -5 ( x+1/5) - 1/2 (x- 2/3)=x
tìm x
a) X x 3/4 = 1/5 b) 3/7 x X = 2/5 c) 1/3 + 2/9 = 2/12 x X
d) 4/15 x X - 2/3 = 1/5 e) x : 1/7 = 2/3 f) 1/9 : x = 7/3 j) 1/4 + 5/12 = 8/3 : x
h) 7/4 : X - 1/2 = 1/5
Tìm x 1) X/5=18/15 2)X/12=3/x 3) X - 2 1/2= 3 1/6 4) 2/5× x= 1/2
Tìm x
a) (-5)(x+1/5)-1/2(x-2/3)=3/2x-5
b)3(x-1/2)-5(x+3/5)=(-x)+1/5
bài 1 : tìm x biết
a, ( x - 2 ) : 2 x 3 = 6
b, X : ( hỗn số 3 1/2 x hỗn số 2 2/3 ) = 9/56
c, 1 + 3 + 5 + .....+ ( 2 x X + 1 ) = 625
bài 2 : tìm x biết
a, ( x - 1/2 ) x 5/3 = 7/4 - 1/2
b, 5 x X + X = 42
c, ( x+1 ) + ( x+ 3 ) + ( x + 5 ) + ....+ ( x + 11 ) = 58
bài 3 tìm x biết
a, X - 1,25 x 4 = 7,5
b, X = ( hỗn số 6 3/5 : 6 - 0 , 125 x 8 + hỗn số 2 2/15 x 0,03 ) x 2/11
c, ( X + 1 ) +(X + 2 ) + ( X + 3 ) + ....+(X + 20 ) = 750
Tìm x biết
1) 2.(x +5)+3.(x+7)=41. 6) 7. (x -1)+5.(3-x)=11.x-10
2) 5. ( x +6 ) +2.(x-3)=38. 7) 4. (2+x)+3(x-2)=12
3) 7.(5+x)+2.(x-10)=15. 8) 5. ( 2+x) +4.(3-x)=10x-15
4) 3. (x+4)+(8-2.x) =22. 9) 7.(x-2) +5.(3-x)=11x-6
5) 4. (x+5)+3.(7-x)=49. 10) 5.(3-x)+5.(x+4)=6+4x
Tìm x, biết:
a.1/4+3/4.x=3/2-x
b.3/5.x-1/4=1/10.x-1/2
c.3x-3/5=x-1/4
d.3/2.x-2/5=1/3.x-1/4
Tìm x biết
-5(x+1/5)-1/2(x-2/3)=3/2x-5/6
3(x-1/2)-5(x+3/5)=-x+1/5
Tìm x biết :
a, (2/3) - (5/3).x = 1/2.( 7/5.x + 5/3 )
b, 1/2.(x+2) - 4.(x - 1/4 ) = (1/2).x
c, (x-3).(x - 1/2) = 3.(1/3.x)
