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(99-b-×8)+2×6÷2=8×2+5×10

Răspuns :

(99bx8)+2x6:2=8x2+5x10
(99b x 8) +12:2=16+50
99b x 8 = 66-6
99b x 8 = 60
792b = 60
b=792/60=396/30=66/5