In order to get 10 pizzas and about 90 cupcakes is to spend roughly 250$ but u could cut back on pizzas.
Should be 63 for that one i believe
Equation solved by a student has been given as,

Solution in each step,
Step 1 → 
Step 2 → 
Step 3 → 
Step 4 → 
In step 2, addition of two terms have been done → 
Therefore, property used to reach at step 2 → Addition property of equality
Like more,
brainly.com/question/4137587