Răspunsuri

2014-04-07T15:47:03+03:00
(9*9-6*6-a)+(13+28:4)=5*10+3
(81-36-a)+(13+7)=50+3
(45-a)+20=53
45-a=33
a=45-33
a=12
  • Utilizator Brainly
2014-04-07T16:49:43+03:00
(9x9-6x6-a)+(13+28:4)=5x10+3
(81-36-a)+(13+7)=50+3
(45-a)+20=53;45-a=33;a=45-33;a=12