Các câu hỏi tương tự
18- 4x = -20-6x
h)-15 x 24 = - 7x +32
i) 15x- 3(4x - 6) = - 12+ 36
k) -10 x - 27 = - 7x +33
m) -17 x - 24 = - 9x - 40
n) -23 x 25 = - 18x +75
p) - 5x+ 7( 2x-3) = 4( x - 4)
q)24- 6(3x + 1) = -5( 4x- 4 ) - 8
r) 18-4. (6-2x) = -3.(4x +5 ) - 11
Jup mik pls
18x - 19 = 21+8x
g)18- 4x = -20-6x
h)-15x - 24 = - 7x +32
i) 15x- 3(4x - 6) = - 12+ 36
k) -10 x - 27 = - 7x +33
m) -17 x - 24 = - 9x - 40
n) -23x + 25 = - 18x +75
p) - 5x+ 7( 2x-3) = 4( x - 4)
q)24- 6(3x + 1) = -5( 4x- 4 ) - 8
r) 18-4. (6-2x) = -3.(4x +5 ) - 11
s) - 5. ( 4x-5) - 14 = 6.(2 - 3x) - 10x-9
giúp mik với giải cả cách làm nhé
6x=3x+1-5x+6x-5x+4x-9x+7x
45 = ... x3=9x...
54=18 x...= 27x... = ... x 6
Toán 6: Chứng minh rằng
a,-6b/9b=-4a/6b. b, 2-2a/6-8b=3-3a/9-12b
c, 7x-21/14x-42=1/2. d, 9x-18/18y-54=x-2/2y-6
e, xy-x2/y2--xy=x/y
x+2x+3x+3x+4x+5x+6x+7x+8x+9x+10x=-165.tim x
x.1x.2x.3x.4x.5x.6x.7x.8x.9x.10x.11x=5500
x=?
Bài 2 : Hãy chứng minh rằng :
a) ab / abab = 3/303
b) 7x - 21/ 14x - 42 = 2/4
c) 9x - 18 / 18y - 54 = 2x - 4 / 4y - 12
d) xy - x2 / y2 - xy = x / y
Chứng tỏ:
9x-18/18y-54=2x-4/4y-12