Răspuns :
5-5:5+5•5
= 5-1+25
= 4+25
= 29
6:6+6•6-6
1+36-6
37-6
=31
7-7:7+7•7
7-1+49
6+49
=55
= 5-1+25
= 4+25
= 29
6:6+6•6-6
1+36-6
37-6
=31
7-7:7+7•7
7-1+49
6+49
=55
5-5:5+5×5=29
5-1+25
4+25
=29
6:6+6×6-6=31
1+36-6
1+30
=31
7-7:7+7×7=55
7-1+49
6+49
=55