Question

aflati x prin factor comun: xa+xb=20 si a+b=5

Answer 1

xa+xb= 20
a+b= 5
x(a+b)= 20
x•5= 20
x= 20:5
x= 4

Answer 2

xa+xb=20

a+b=5

xa+xb=20

x(a+b)=20

5x=20

x=20:5

x=4

Succes!