Question

I have 1 bag of marbles. I put in 3 extra marbles. There are now 9 marbles in the bag. How many were in the bag to begin with?

Please give me the formula and all too

Answer 1

6

x+3=9

Explanation:

Answer 2

6 Marbles

Explanation:

9-3=6

The bag of marbles had 6 marbles in it originally.