Question

найдите разность 4-(-7) , 18-(-5), -21-(-20) ,-7-(-9) , -30-(-30), -17-(-2),
3-(-3), -31-(-62)

Answer 1

11,23,-1,2,0,-15,6,31

Answer 2

4-(-7)=11
18-(-5)=23
 -21-(-20) =-1
-7-(-9)=2
 -30-(-30)=0
 -17-(-2)= -15
3-(-3)=6
-31-(-62) =31