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(18+41x2)+500:a-25x2=150

Răspuns :

(18+82)+500:a-50=150
100+500:a-50=150
100+500:a=150+50
100+500:A=200
500:a=200-100
500:a=100
a=500:100
a=5
V  100+500:5-50=150