Đáp án:
$a)1/2-|3/4-5/6|=1-x$
$⇔ 1/2 - |-1/12| = 1-x$
$⇔ 1/2 - 1/12 - 1 + x = 0$
$⇔ -7/12 + x =0 $
$⇔ x = 7/12$
$b) x-(-1/5) -|5/3-1/2|=3/4$
$⇔ x - (-1/5) - 7/6 - 3/4 =0 $
$⇔ x - (-103/60)=0$
$⇔ x= 103/60$
$c)x+|1/5-4/3|=|-7/4|$
$⇔ x + |-17/15| = 7/4$
$⇔ x + 17/15 - 7/4 =0 $
$⇔ x - 37/60 =0 $
$⇔ x = 37/60$
$d)|1-1/2|+x=|-5/4|$
$⇔ |1/2| + x = 5/4$
$⇔ 1/2 + x - 5/4 =0 $
$⇔ x - 3/4 =0 $
$⇔ x=3/4$
BẠN THAM KHẢO NHA!!!