Question

a+b=27 si ax+bx=108 x=?

Answer 1

ax+bx=108 x(a+b)=108 x•27=108 x=108/27=4

Answer 2

a+b=27
ax+bx=108 <=> x(a+b)=108
Inlocuim prima relatie in a doua
x•27=108
x=108÷27
x=4
succes!