Question

a+b+c=150 2a+b+2c=255 (a+c)x(3a+2b+3c)=? Va rogg ajutor

Answer 1

Răspuns:

(a+c)x(3a+2b+3c)=42525

Explicație pas cu pas:

a+b+c=150

2a+b+2c=255

(a+c)x(3a+2b+3c)=?

Inlocuim in 2a+b+2c=255 suma a+b+c=150  si obtinem: 150+a+c=255  ⇒ a+c=255-150  ⇒a+c=105 ⇒ (a+c)x(3a+2b+3c)=105x(2a+b+2c+a+b+c)=

105x(255+150)= 105x405= 42525