Question

(4-2,5*35):3 13-13

Answer 1

(4-2,5*35):3 13-13
(4-5/2*3/5)*1/3*1/3-1/3
(4-1/2*3)*1/3*1/3-1/3
(4-3/2)*1/3*1/3-1/3
5/2*1/3*1/3-1/3
5/18-1/3
-1/18 или ≈ -0,55