Question

Gabriella is x years old. Her sister Felicia is six years older than she is there mom is twice as old as them Write and simplify an expression that represents Tanya’s age in years

Answer 1

G = x
F = x+6
M = 2(x+6)
T = 2(x+6) + x
or simplified to
T = 3x + 12

This is how it's done! 
If we knew Gabriella's age, we'd know all of theirs! lol

Hope this helps :)