impossible
6+5+5+5
5/5 + 5/5 = 2.
5 divided by 5, plus 5
6 / (1 - 5/7)
(5 x 4) + 3 = 23
(5 divided by 5) + (5 divided by 5) = 2
3 + 4 * 5 = 23 Remember that multiplication must be carried out before addition.
7x(5-1)-6=22
Addition: yes. Subtraction: only if you redefine it as an addition, for example 5 - 3 = 5 + (-3) = (-3) + 5 = -3 + 5. You might simply keep each number with its sign.
8+5=6+7
60