Question

a)-1-(-21-9+15)=
b)+12-(+3-4+15)-(-20+2)=
c)-5+(-7-22+13+15)-(-6-8)=
va rog ajutatima dau coroana
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Answer 1

Răspuns:

a)-1-(-21-9+15)=

-1-(-30+15)=

-1-(-15)=

-1+15=14

b)+12-(+3-4+15)-(-20+2)=

+12-(-1+15)-(-18)=

+12-(+14)+18=

+12-14+18=

-2+18=16

c)-5+(-7-22+13+15)-(-6-8)=

-5+(-29+13+15)-(-14)=

-5+(-16+15)+14=

-5+(-1)+14=

-5-1+14=

-6+14=8

sper că te-am ajutat!