Respuesta :

nhatminh082004pc2e48
*(1)
[tex]f \times (g + 9) = 60 \\ f \times g + 9 f = 60[/tex]
*(2)
[tex]g \times f = 24[/tex]
(2),(1) :
[tex]24 + 9f = 60 \\ 9f = 60 - 24 = 36 \\ f = 36 \div 9 = 4[/tex]
(2) :
[tex]g \times f = 24 \\ 4g = 24 \\ g = 24 \div 4 = 6[/tex]