Tìm x dạng phân số nhé
a) 2/3.x – 4/7= 1/8
2) |x-1/2|=3/2
3) 2/7-8/9.x=2/3
4) |2x-3/4|-3/8=1/8
5)2/3.x-4/7=1/8
6)x/468=-7.5/13.9
7)-2/3:(1/2-3x)=5/3
8)5/9+1/3:x=2/3
9)1/7.|x|-4/5=1/5
10)|2/3.x-1/2|-1=5/6
11)x:(-2)/3-1/3=-53/4
12)5/9+1/3:x=2/3
13)|x-1/4|=1/3-1/4
14)2.(x-1/3)=(1/3)*2+5/9
15)(2/3-1/2x) :2/3=3/4
16)4/7+5/9:x=1/5
17)2/5-2/5x=2/5
Tìm x dạng phân số nhé a) 2/3.x – 4/7= 1/8 2) |x-1/2|=3/2 3) 2/7-8/9.x=2/3 4) |2x-3/4|-3/8=1/8 5)2/3.x-4/7=1/8 6)x/468=-7.5/13.9 7)-2/3:(1/2-3x)=5/3 8
By Melody
Đáp án:
1)2/3.x – 4/7= 1/8
112x=221+96
112x=117
x=117\112
2 |x-1/2|=3/2
TH1 x-1\2=3\2 TH2 X-1\2=-3\2
TH1 = 2 TH2 -1
X thuoc (-1,2)
3 )2/ 7-8/9.x=2/3
-56x=42-18
-56=24
x=-3\7
4) |2x-3/4|-3/8=1/8
|2x-3/4| =1\8 + 3\8
|2x-3/4| = 1\2
TH1 2X-3\4=-1\2 TH2 2X-3\4=-1\2
X =1\8 X=5\8
X thuoc (….)