Răspuns :
Răspuns:
2+a×2=12 (notam paranteza cu a)
a=(12-2)÷2
a=10÷2=5
2+2+2÷m=5
2÷m=5-2-2
2÷m=1
m=2×1=2
2+(2+2+2:m)×2=12
(2+2+2:m)×2=12-2
(2+2+2:m)×2=10:2
2+2+2:m=5
4+2:m=5-4
2:m=1×2
m=2
Răspuns:
2+a×2=12 (notam paranteza cu a)
a=(12-2)÷2
a=10÷2=5
2+2+2÷m=5
2÷m=5-2-2
2÷m=1
m=2×1=2
2+(2+2+2:m)×2=12
(2+2+2:m)×2=12-2
(2+2+2:m)×2=10:2
2+2+2:m=5
4+2:m=5-4
2:m=1×2
m=2