Question

zad4str81 oblicz

a)5+(-4)

b)6-(-7)

c)-21+(-4)

d)-10-(-20)

Answer 1

a)5+(-4)=5-4=1

b)6-(-7)=6+7=13

c)-21+(-4)=-21-4=-25

d)-10-(-20)=-10+20=10

Answer 2

a)1

b)13

c)-25

d)10