Question

qual resultado da equacao x+(x+3)=23

Answer 1

x+(x+3)=23
x+x= 23-3
  2x= 20
    x= 20/2
    x=10

Answer 2

x+(x+3) = 23
x+x = 23 - 3
2x = 20
x = 20 / 2
x = 10