Răspuns:
4/9÷1/3-3÷9=1
3-3÷9=3-3/9
4/9÷1/3-3/9=1
4(3-3/9)/9×1=1
4(3-3/9)/9=1
3-3/9=3/1-3/9=27-3/9=24/9=8/3
4×8/3/9=1
32/3/9=1
32/3×9=1
32/27=1
"fals"