Let’s first make this an equation where x equals the number of pizzas:
8.5+15x=18.5x
Now we will subtract 15x from both sides to get the variables together:
8.5=18.5x-15x
8.5=3.5x
Next we will divide both sides by 3.5 to isolate the variable:
8.5/3.5=x
2.4=x
The decimal places keep going, but we can’t order a fraction of a pizza and I don’t know from the question how many decimal places we’re supposed to round to, so I just rounded to one place.
I hope this helps. Let me know if you have any questions. Mark as brainliest of this helps you.
