Tìm x biết: a) |x + 3/4| = 1/2 b) |5/18 - x| - 7/24 = 0
Giải thích
a) x+34=12⇔x+34=−12x+34=12⇔x=−54x=−14
b) 518−x−724=0⇔518−x=724⇔518−x=−724518−x=724⇔x=4172x=−172
a) x+34=12⇔x+34=−12x+34=12⇔x=−54x=−14
b) 518−x−724=0⇔518−x=724⇔518−x=−724518−x=724⇔x=4172x=−172