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Care este valoarea lui x?
[(x:7)x9 + (1000-450:10:5)]:4=295


Răspuns :

(x:7)x9+(100-450:10:5)=295x4
(x:7)x9+(100-45:5)=1180
(x:7)x9+(100-9)=1180
(x:7)x9+91=1180
(x:7)x9=1180-91
(x:7)x9=1089
x:7=1089:9
x:7=121
x=121x7
x=847