Question

Oblicz: a) (-4)+(-7)-(-5)=... 12-(-6)+(-20)=... (-103)-(-12)-(-57)=... b) (-3)-(-5)+(-9)-(+4)=... 13-(+15)-(-23)+(-30)=... (-40)+(-35)-(+50)-(-65)=... ;(

Answer 1

A) -4-7+5= -6

  12+6-20= -2

  -103+12+57= -34

b) -3+5-9-4= -11

  13-15+23-30= -9

 -40-35-50+65= -60

:)) to juz jest napisane jak po zamianie znaków :)

Answer 2

a) (-4)+(-7)-(-5)=(-6)

12-(-6)+(-20)=(-2)

(-103)-(-12)-(-57)=(-34)

b)(-3)-(-5)+(-9)-(+4)=(-11)

13-(-15)-(-23)+(-30)=21

(-40)+(-35)-(+50)-(-65)=(-60)

 

                                                                                                 licze na NAJ!