Question

вычисли 72- (39-26()-
э

Answer 1

72-(39-26)-6= 39-26=7 
72-7-6= 72-1= 71

Answer 2

72 - (39 + 26) - 6 = 72 - 65 - 6 = 1
(72 - 39) + (26 - 6) = 33 + 20 = 53
72 - (39 + 26 - 6) = 72 - (65 - 6) = 72 - 59 = 13 72 - (39 - 26 - 6) = 72 - (13 - 6) = 72 - 7 = 65