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Afla pe x:
7-[5200:10-5•(360-2x)]:20=5
Va roog muult dau puncte multee!!


Răspuns :

7-[5200:10-5•(360-2x)]:20=5
-(520-1800+10x):20=5-7
(-1280+10x)=2*20
-1280+10x=40
10x=1280+40
10x=1320
x=132