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[(b-8000)/50+900]/250=4

Răspuns :

[(b-8000):50+900]:250=4
(b-8000):50+900=250x4
(b-8000):50+900=1000
(b-8000):50=1000-900
(b-8000):50=100
b-8000=100x50
b-8000=5000
b=8000+5000
b=13.000
proba:[(13.000-8000):50+900]:250=(5000:50+900):250=(100+900):250=1000:250=4
=(b-8000):50+900=4×250; =(b-8000):50+900=1000; =(b-8000):50=1000-900; =(b-8000):50=100; =b-8000=100×50; =b-8000=5000; =b=5000+8000; b=13000