the answer is 54 because if you have 5x+13 and 3x+33 you have to make an equation 70= x+x and x=5x+13 and x=3x+33 and then substitute x=5(3x+33)+13 x=15x+99+13 move the x over and combine the values 16x=112 Devide 112/16=7 then replace other x to find the next answer x=3(7)+33 and you get 54 so abd is 70 cbd is 16 and abc is 54
