Răspuns:
[(58xa-80):25]x64=1280
[(58 x a-80):25]=1280:64
[(58xa-80):25]=20
(58xa-80)=20x25
(58xa-80)=500
58xa=500+80
58xa=580
a=580:58
a=10
[(58 x a - 80): 25] x 64 = 1280
[(58 x a - 80): 25]=1280:64
[(58 x a - 80): 25]=20
(58 x a - 80)=25 x 20
(58 x a - 80)=500
(58 x a)=500+80
(58 x a)=580
