Question

hallar el valor de x y verificar 

 

5.9-9+x-9=64

Answer 1

5*9-9+x-9=64

45-9+x-9=64

x+27=64

x=37

 

comprobacion:

5*9-9+(37)-9=64

Answer 2

45-9+x=64

44+x=64

x=64-44

x=20

por q

64-44=20