3x+12=35:32
3x+12=35-2
3x+12=33
3x+12=27
3x =27-12
3x =15
x =15:3
x =5
Đúng 0
Bình luận (0)
Các câu hỏi tương tự
Bài 1: Tìm x, biết:
a) 4/3 - 1/3 . x =3
b) 12/5 - ( x + 12/5 ) = 1/3 - 2/5
c) 15/7 + ( x - 1/7 ) = -3
d) 3x/5 . (3x - 1/2) = 0
e) 11/12 - ( 2/5 + x ) = 2/3
1/ (2x - 5) +17 =6
2/ 10 - 2(4 - 3x) = - 4
3/- 12 +3(- x + 7) = -18
4/ 24 :(3x - 2)= - 3
5/ - 45 :5.(- 3- 2x) = 3
Tìm x biết :
a)(3x-3)+(x-2)=(2x-2)-(x-1).
b)(4x-3)+(3x+5)=3x-2.
c)(6x-8)-5(x+2)=2x-12.
d)(9x-2)-4(2x+5)=-12.
2/3x-3/2x=5/12
b)2/5+3/5.(3x-3,7)=-53/10
c)7/9:(2+3/4x)+5/9=23/27
Tìm x biết:
a) 12 ( 2x - 6 ) - 43= 5^3
b) 7 ( 25 - 3x ) = 3^4 - 2^5
c) ( 3x - 5 ) + 3^4 = 6^0 = 5^3
d) 3x + 2x ( 2^3 . 5 - 3^2 . 4 ) + 5^2 = 4^4
e) 720 : [ 41 - (2x - 5 ) ] = 2^3 .5
a) 2/3+1/3:x=3/5
b) 10/3x +67/4=-13,25
c) x+30℅x=-1,3
d) (14/5x -50):2/3=51
e) 2/5+3/5.(3x-3,7)= -53/10
f) 2/3x -3/2x =5/12
tìm x
12-2(4-3x)=-4
24:(3x-2)=-3
-45:5.(-3-2x)=3
1. 10 - 2 (4 - 3x) = -4
2. -12 + 3 (-x + 7) -18
3. 24 : (3x - 2) = -3
4. -45 : 5 (-3 - 2x) = 3
a)-5.(-x+7)-3.(-x-5)=-4.(12-x)+48
b) (-x-7)-5.(-x-3)=12.(3-x)
c)-2.(15-3x)-4.(7x+8)=-5-9.(-2x+1)
d) (-3x-7) - 4.(-2x-11)=7.(4x+10)+9