Question

odejnmowanie licz całkowitych:

a) 1. (-4)+(-7)-(-5)=

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

3. (-103)-(-12)-(-57)=

b)1. (-3)-(-5)+(-9)-(+4)=

2. 13-(+15)-(-23)+(-30)=

3. (-40)+(-35)-(+50)-(-65)=

Z góry dziękuje a tu są 2 wzory na to:

1.(-12)+(-8)-(+7)-(-9)=-12-8-7+9=-27+9=-18

2.-(-13)+(-2)-(+16)+(-5)=13-2-16-5=13-23=-10

Answer 1

a) 1.(-6)

2.(-2)

3.(-34)

b) 1.(-11)

2.(-9)

3.40

Answer 2

(-4)+(-7)-(5)=-4-7+5=-11+5=-6

12-(-6)+(-20)=12+6-20=18-20=-2

(-103)-(-12)-(-57)=-103+12+57=-91+57=-34

(-3)-(-5)+(-9)-(+4)=-3+5-9-4=2-9-4=-7-4=-11

13-(+15)-(23)+(-30)=13-15+23-30=-2+23-30=21-30=-9

(-40)+(-35)-(+50)-(-65)=-40-35-50+65=-75-50+65=-125+65=-60