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(40:c+16):8 = 9:3 urgent clasa 3-a

Răspuns :

(40:c+16):8=3
40:c+16=3x8
40:c+16=24
40:c=24-16
40:c=8
c=40:8
c=5
(40:c+16):8=3
40+c+16=3×8
40+c+16=24
40+c=24+16
40+c=40
c=40-40
c=0