Respuesta :
f - 5g = 25 -f
f + f = 25 + 5g
25 + 5g = 2f
5g = 2f -25. divide both sides by 5
g = (2f - 25)/5
2f = 25 + 5g ........divide both sides by 2
f = (25 + 5g)/2
f - 5g = 25 -f
f + f = 25 + 5g
25 + 5g = 2f
5g = 2f -25. divide both sides by 5
g = (2f - 25)/5
2f = 25 + 5g ........divide both sides by 2
f = (25 + 5g)/2