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35×f+(800-752:4):2=551
g:25+(100-1632:51)×2=286


Răspuns :

35xf + (800-188) : 2 = 551
35xf + 612 : 2 = 551
35 x f + 306 = 551
35 x f = 551 - 306
35 x f = 245
f = 245 : 35
f = 7