Respuesta :

x = 4

36 + x = 10x 

36 + x (-x) = 10x (-x)

36 = 9x

36/9 = 9x/9

x = 4

36 + (4) = 10(4)
40 = 40 (true)

hope this helps
subtract x from both sides gives:-

36 = 10x - x

36 = 9x  

x = 36/9 = 4 answer.