Respuesta :

Karla is correct. 10 x 1/2 = 5. 15 + 5 =20.
~Silver
Hello there!

Let see if Clara is correct :)

10x + 15 = 20

Start by adding -15 on both sides

10x + 15 - 15 = 20 - 15

10x = 5

x = 5/10

x = 1/2

Well done Karla! She is correct :)