Đáp án:
a) 11/6, b) 3/35, c) 11/14, d)5/4 ,e)-13/45 f)-5/7, g) 5/4, h) 13/4, i) 1, k) 52/63, l) 4/21 m) -8/11
Giải thích các bước giải:
a) x-2/3=7/6
=>x =7/6+2/3
=> x =11/6
b) 2/7-x=1/5
=> x= 2/7-1/5
=> x= 3/35
c) x-3/7=5/14
=>x = 5/14+3/7
=>x = 11/14
d) x-1/2=3/4
=>x = 3/4+1/2
=>x = 5/4
e) 3/5-x= 8/9
=> x=3/5-8/9
=> x= -13/45
f) 3/7+x = -2/7
=> x= -2/7-3/7
=> x=-5/7
g) x-3/4=1/2
=>x =1/2+3/4
=>x =5/4
h)5/2-x=-3/4
=> x = 5/2-(-3/4)
=> x = 13/4
i) 7/12-(-5/12)=1
k) x-5/7=1/9
=>x =1/9+5/7
=>x =52/63
l) 1/6-x= -1/42
=> x= 1/6-(-1/42)
=> x= 4/21
m)x+-5/11=-13/11
=>x =-13/11-(-5/11)
=>x = -8
Cho mình 5 sao với nhaaaa
