Răspuns :
Răspuns:
[(3500:x+5):3-56]x5=20
(3500:x+5):3-56=20:5
(3500:x+5):3=4+56
3500:x+5=60·3
3500:x=180-5
x=3500:175
x=20
Răspuns:
((3500:x+5):3-56)=20:5
=4
(3500:x+5):3=4+56
=60
3500:x+5=60x3
=180
3500:x=180-5
3500:x=175
x=3500:175
x=20
Explicație pas cu pas: