8.b.-Jöfnur 8-10-2

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Nýttu þér sömu aðferðir og eru á bls 31 til að leysa dæmin.


Gangi þér vel

2x + 5 +3x =20                                       
6x +2x+x +3 = 30
4+x +7+x =33                                                
3n-40+2n=15                                                 

13x -7 -10x =2

 

3x+3x +1 = 25

 

7g + 14 -3g =6                                                 

 

10y -3y + 5 = 54

 

8f +3 - 2f -2 = 31                                              

 

12b -5 -2b = 25

 

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