Răspuns :
2×8345=a/4
a/4=16690
a=4×16690
a=66760
Probă :
2×8345=66760:4
16690=16690 (adevarat )
a/4=16690
a=4×16690
a=66760
Probă :
2×8345=66760:4
16690=16690 (adevarat )