Odpowiedź :
-20+(-12) = -32
14+(-12)= 2
-15+30 = 15
-40+25= -15
35-20= 15
20-45= -25
-12-18= -30
-30-(-10)= -30+10= -20
25-(-15) =25+15= 40
-8-(-8)= -8+8= 0
-20+(-12) = -32
14+(-12)= 2
-15+30 = 15
-40+25= -15
35-20= 15
20-45= -25
-12-18= -30
-30-(-10)= -30+10= -20
25-(-15) =25+15= 40
-8-(-8)= -8+8= 0