a school plan to spend twice the amount it did last year on its winter dance less of the cost disco ball which was $150 since they have have it from last year a total of 1500 is being spent this year fill in the blanks to write an equation that will determine the amount of last years budget

To determine the amount of last year's budget for the winter dance, we can set up an equation based on the information provided.

Let \( x \) represent last year's budget. According to the problem:

1. The school plans to spend twice the amount it did last year on the winter dance, so this would be \( 2x \).
2. The disco ball cost $150, and since they already have it, we can subtract this cost from the total budget for this year's dance.

The total amount being spent this year is $1500, so we can set up the equation as follows:

\[
2x - 150 = 1500
\]

Now you can solve for \( x \) to find last year's budget.

### Solve for \( x \):

1. Add 150 to both sides:

\[
2x = 1500 + 150
\]

\[
2x = 1650
\]

2. Divide both sides by 2:

\[
x = \frac{1650}{2}
\]

\[
x = 825
\]

Thus, last year's budget was $825.