Where is x and y ? i don’t see it in the equation
Answer:
I think it's uhm twelve I'm not 100% sure though
5ft is the answer to your question
Yupz u b right cuz 8+9 is ur answer Don’t be so hard on yourself take it easy
Let m and j be the current ages of Matthew and Jenny, respectively.
Now, Matthew is 3 times as old as Jenny, so the variables are in the following relation:

In 7 years, both of them will be 7 years older, i.e. their ages will be m+7 and j+7, and Matthew will be twice as old:

Now, remembering that m=3j, we can rewrite the second equation as

So, Jenny is 7 and Matthew is 21 (he's 3 times older).
In fact, in 7 years, they will be 14 and 28, and Matthew will be twice as old.