Mariailcadaniel Mariailcadaniel 24-10-2016 Matematică a fost răspuns Daca a-5b=7 atunci aflati x in relatile: a) x+3a-15b=29 b) x-123+5a-25b=137 c) x-2a+10b+17=4 d) 47-x+7a-35b=2a-10b+4