Tìm x, biết: a) |x -2/3| = |-1/5| + 3/4 b) |x-3| = 1/5 | + |1/7 = 1/14|

a) x−23=−−15+34⇔x−23=−15+34=1120⇔x−23=1120x−23=−1120⇔x=7360x=760

b) x−3=15+17−114⇔x−3=15+114=1970⇔x−3=1970x−3=−1970⇔x=22970x=19170