If you plug in 157, we get 5x-157=30. Then we will add 157 to both sides to get 5x=187 and then divide by 5 on both sides leaving x on one side and the answer on the other so, 187/5=37.4.
List out the numbers from 1 to 50. Then go through that list and circle any numbers that have 9 in them. Those numbers are: 9, 19, 29, 39, 49 So there are 5 houses with 9s painted
