Question

Aflati numarul natural x stiind ca 3×(2x+1)-1=32

Answer 1

Inmultim cu 3 paranteza si efectuam calculele.

6x+3-1 = 32

6x = 32+1-3

6x = 30

x = 30:6

x = 5

Answer 2

3(2x+1)-1= 32
3(2x+1)= 32+1
3(2x+1)= 33
3•2x+3•1= 33
6x+3= 33
6x= 33-3
6x= 30
x= 30/6
x= 5