36-4=36+4?fals sau adevarat?
75+3=75+1+2?
86-6=86-4-2?
91+3=93+1?


Răspuns :

36-4=36+4 Fals
75+3=75+1+2 Adevărat
86-6=86-4-2 Adevărat
91+3=93+1 Adevărat
36-4=36+4 ( Fals )
36-4=32
36+4=40
32=40 (fals)

75+3=75+1+2 ( Adevărat )
75+3=78
75+1+2=76+2=78
78=78 (adevărat)

86-6=86-4-2 ( Adevărat )
86-6=80
86-4-2=82-2=80
80=80 (adevărat)

91+3=93+1 ( Adevărat )
91+3=94
93+1=94
94=94 (adevărat)