I need help on this question

Question

Teresa's penny bank is 2/3 full. After she removes 160 pennies, it is 4/9 full. How many pennies can Teresa’s bank hold?

Answer 1

x = number of pennies when the bank is full

(2/3)x - 160 = (4/9)x

Solve for x.

(2/3 - 4/9)x = 160

(2/9)x = 160

x = 720