3x+17+5=7x+10
3x+22=7x+10
3x-7x=10-22
-4x-=-12
4x=12
X= 12/4
X=3
2.345 because 115% becomes 1.15 and 117.5% becomes 1.175.
Answer:
x= 2.5
Step-by-step explanation:
7x-5x = 2x
2x-2 = 3
3 + 2 = 5
2x=5
5/2 = 2.5
5*3 = 15 total pizzas for everyone
Since you can't necessarily order a fraction of a pizza (not thinking about singles), you have to buy two boxes or 15 pizzas.