Bryn’s age is given by the expression 3g - 7 where g is her sister gabriela’s age. if bryn is 17 how old is gabriela?

if Bryn is 17 then 3g - 7 =17 so if we add 7 to 17 the equation is

3g = 24 and divide the equation by 3 g = 8

Gabriela is 8

step-by-step explanation:

this is not possible to solve with the info given.   you need at least an one angle somewhere.

the first one, all those points on the line just make a strait line.