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[(a×56:8)×72-4900]:4-53=936

Răspuns :

(7a×72-4900)÷4-53=936
(504a-4900)÷4-53=936
126a-1225-53=936
126a=936+1225+53
126a=2214
a=2214/126
a=738/42
a=369/21
a=123/7
sper că te-am ajutat