1/2 -(+4) = 1/2 - 4 = -7/2
-5/11-(-5/11) = -5/11 + 5/11 = 0
-5-(2 цел 1/3) = -5 - (7/3) = -22/3
-8-(-1/7) = -8 + 1/7 = -55/7
1/6-(+3) = 1/6 - 3 = -17/6
-5/12 -(-4) = -5/12 + 4 = 43/12
1/2 -(+4) = 1/2 - 4 = -7/2
-5/11-(-5/11) = -5/11 + 5/11 = 0
-5-(2 цел 1/3) = -5 - (7/3) = -22/3
-8-(-1/7) = -8 + 1/7 = -55/7
1/6-(+3) = 1/6 - 3 = -17/6
-5/12 -(-4) = -5/12 + 4 = 43/12