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(8x8-32-12:k)-(40-2x10=3x3

Răspuns :

(8×8-32-12:k)-(40-2×10)=3×3
(64-32-12:k)-(40-20)=9
(32-12:k)-20=9
32-12:k=9+20
32-12:k=29
12:k=32-29
12:k=3
k=12:3
k=4