Question

c)Daca a x+ a=99 si x=10,aflati-l pe a. d)Daca a+b+c+d=30 si a+d=10, calculati 7a+9b+9c+7d. e)Daca a+b=15si b+c=14calculati 3a+5b+2c.

Answer 1

Sper sa intelegi ce am scris. Daca nu, ma poti intreba oricand.