Question

VA ROG MULT CINE MA AJUTA EXERCITIUL 2,SUPER URGENT!!

Answer 1

Notez / = impartire.
a/b = 4 => a = 4b
Si inlocuim , avem : 3a - 2b / b = 10
Dar a = 4b => Avem 3*4b - 2b / b = 10
                      10b / b = 10 (Adevarat)
Simplu.

Answer 2

$\frac{a}{b}=4 \\ \\ a=4b$
$\frac{3a-2b}{b}=\frac{3\cdot4b-2b}{b}=\frac{12b-2b}{b}=\frac{10b}{b}=10$