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Răspuns :

Răspuns:

3(2x+1)-7=26

3(2x+1)=26+7

3(2x+1)=33

2x+1=33:3

2x+1=11

2x=11-1

2x=10

x=10:2

x=5

2(5x+7)=114

5x+7=114:2

5x+7=57

5x=57-7

5x=50

x=50:5

x=10

Răspuns:

3(2x+1)-7=26

6x+3=26+7

6x+3=33

6x=33-3

6x=30

x= 30:6

x=5

2(5x+7)=114

5x+7=114:2

5x+7=57

5x=57-7

5x=50

x=50:5

x= 10