Bài 1: Tìm x : A) 25%x+4x=35-0,75x
B) 3/4.(x-2) - 1/2.(6-2x)=1/6x + 5
C) -1/2.(3x+5) - 2/3.(9-6x)= 3/5.(x-10) - 3
D) (1/4x - 1,5) + (5/6x-3) - (5/8x-0,5)= -4,5
6x+x= 5^11: 5^9 +3^1
6x - ( - 5 ) = 17
( x + 2 ) (x -9 )
6x-(-5)=17
(x+2).(x-9)=0
1)5x+2(x+1/2)=7
2)8x-3(x+2)=9
3)5(x-2)+3(x-1)=19
4)7(x-3)-2x-5=11
5)6x+3-2(x-5)=30
6)8(x-1/8)-5(x-1/5)=10
7)13x-5-2(x+3)=1
8)4(x-2)-2(x-1)=12
9)6x-13-2-(x×5)=7
10)7(x-5)-3(x+5)=30
a.7.(x-9)-5.(6-x)=-6x+11x
b.7.(x-3)-5.(3-x)=11-5x
\(6x+x=5^{11}:5^9+3^1\)
Tìm x
Tìm x ?
1) ( 2x - 5 ) ( x + 9 ) + 6x = 30
làm nhanh giúp ạ
a) x- 45= 48- 68
b) 157- (x- 124)= -483
c) 6x+ 15= -9
d) (1- x). 5^4= 3. 5^5