Răspuns:
Explicație pas cu pas:
[12+3x(16:f:4)x3] :7 :3=1
[12+3x(16:f:4)x3]:7=1x3
[ 12+3x(16:f:4) x3] :7=3
[12+3x(16:f:4)x3=3x7
12+3x(16:f:4)x3=21
3x(16:f:4) x3=21-12
3x(16:f:4)x3=9
3x(16:f:4)=9:3
3x(16:f:4)=3
16:f:4=3:3
16:f:4=1
16:f=1x4
16:f=4
f=16:4
f=4
