Răspuns :
8x8-32-(6xi-51)-(40-20)=9
8x8-32-(6xi-51)-20=9
64-32-(6xi-51)-20=9
32-(6xi-51)=9+20
32-(6xi-51)=29
32-29=6xi-51
6xi-51=3
6xi=51+3=54
6xi=54
i=54:6
i=9
8x8-32-(6xi-51)-20=9
64-32-(6xi-51)-20=9
32-(6xi-51)=9+20
32-(6xi-51)=29
32-29=6xi-51
6xi-51=3
6xi=51+3=54
6xi=54
i=54:6
i=9
64-32-(6×i-51)-20=9
32-(6×i-51)-20=9
32-(6×i-51)=9+20
32-(6×i-51)=29
6×i-51=32-29
6×i-51=3
6×i=51+3
6×i=54
i=54:6
i=9
32-(6×i-51)-20=9
32-(6×i-51)=9+20
32-(6×i-51)=29
6×i-51=32-29
6×i-51=3
6×i=51+3
6×i=54
i=54:6
i=9