Respuesta :

LeoWren
34 
34 - 18 equals 16 
sorry i need 20 characters to put this up soooo bleh toda lit ooooooooo
VivaciousLyla
Hello!

The sister's age is 16, and the brother's age is his age minus 18.

The equation would be:

B - 18 = 16

Use opposite operation -- add:

18 + 16 = 34

B = 34

A N S W E R:

The brother is 34 years old.