The ground floor of a building is 18 feet in height and each floor above it is 12 feet in height.

taking the ground floor as floor one, list the height of the building at each of the first five floors. explain your reasoning.

18+12*4=18+48=66 ft
1st floor is 18ft
next 4 are 12ft

You move the constant to the right side and change its sign to be 9z= -6 -8. that’s the first step.the second step would be calculate the difference of -8-6 to get -14. you equation should now be 9z=-14the last step is to divide both sides by 9 to get z=-14/9hope this