ANSWER
9 jewelries
Step-by-step explanation
We want to find the total number of pieces of jewelry.
Let the number of rings be r.
Let the number of bracelets be b.
The number of rings is 7 less than 3 times the number of bracelets.
This means that:
r = (3 * b) - 7
r = 3b - 7
She has 4 bracelets. This means that:
r = 3(4) - 7
r = 12 - 7
r = 5
She has 5 rings.
Therefore, the total number of jewelry she has is:
5 + 4
= 9 jewelries
That is the answer.