[48+50×100:(28:a+3×2)-14]×[(50-4×5)+(143-4×6)]=42.316
Notăm (28:a+6) cu litera b
Astfel avem:
(48+5000:b-14)× 149= 42.316
48+5000:b-14=284
48+5000:b=298
5000:b=250
b=20
28:a+6=20
28:a=14
a=2
Sper ca e bine.
