Đáp án:
a. |x-1/6| +(-5/12)=4/7.14/48
|x-1/6|+(-5/12)=4.14/7.48
|x-1/6|+(-5/12)=1.2/1.12
|x-1/6|+(-5/12)=2/12
|x-1/6|=2/12-(-5/12)
|x-1/6|=2/12+5/12
|x-1/6|=7/12
=> x-1/6=7/12 hoặc x-1/6=-7/12
*x-1/6=7/12
x=7/12+1/6
x=7/12+2/12
x=3/4
*x-1/6=-7/12
x=-7/12-1/6
x=-(7/12+2/12)
x=-3/4
vậy x= -3/4 hoặc x= 3/4
b.5/11.16/10-|x+1/3|=5/22
16/10-|x+1/3|=5/22:5/11
16/10-|x+1/3|=5/22.11/5
16/10-|x+1/3|=5.11/22.5
16/10-|x+1/3|=1.1/2.5
16/10-|x+1/3|=1/10
|x+1/3|=16/10-1/10
|x+1/3|=3/2
=>x+1/3=3/2 hoặc x+1/3=-3/2
*x+1/3=15/10
x=3/2-1/3
x=9/6-2/6
x=7/6
*x+1/3=-3/2
x=-3/2-1/3
x=-(9/6-2/6)
x=-7/6
vậy x=7/6 hoặc x= -7/6
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