Question

Реши уравение:

(у+(у+12))*4=600

Answer 1

(у+(у+12))*4=600

у+у+12=600:4

2у+12=150

2у=150-12

2у=138

у=138:2

у=69                             

(69+(69+12))*4=600

         (69+81)*4=600

               150*4=600

                   600=600

Ответ: 69.