Răspuns:
a) x+1/5=x+4/13 aducem la acelasi numitor
13x+13=5x+20
8x=7=>x=7/8
b) x-2/x=7/13
13x-26=7x
6x=26
x=26/6
c)3x+4/x+5=5/3
9x+12+15x=5x
19x=-12
x=-12/19
d)4x-3/11=2x+5/7
28x-21=22x+55
6x=76
x=76/6
Explicație pas cu pas:
Spor la scris! Sper sa fie bine!