
Nathan B. answered 11/12/21
Elementary and Algebraic skilled
Here's what we know:
20 - 3t = 8 (Sara started with $20, and spent money on 3 tickets. She was then left with $8)
Now that we have the equation, we can solve for t. Start by subtracting 20:
20 - 3t - 20 = 8 - 20
-3t = -12
Now divide by -3:
-3t / -3 = -12 / -3
t = 4
check:
20 - 3 * 4 = 8
20 - 12 = 8
8 = 8
So each ticket costs $4.