aflati numarul natural x stiind ca 2ori (3x+1)-1=43​

Răspuns :

Răspuns:

2•(3x+1)-1=43

6x+2-1=43

6x+2=43+1

6x+2=44

6x=44-2

6x=42

x=42:6

x=7

Răspuns:

6x+2-1=43

6x+1=43

6x=42

x=42/6

x=7