Question

paranteza 4 ori l plus 5 închide paranteza minus 6 ori 2 egal cu 5.Cat este l.

Answer 1

(4•l+5)-6•2=5
(4l+5)-12=5
4l+5=5+12
4l+5=17
4•l=17-5
4•l=12
l=12:4
l=3
v: (4•3+5)-6•2=
(12+5)-6•2=
17-6•2=
17-12=
5