Question

Building A is 160 feet shorter than Building B. The total height of the two buildings is 1520. What is the height of each building?

Answer 1

`x-\ height\ of\ building\ B\\\\ x-160-\ height\ of\ building\ A\\\\ x+x-160=1250\\ 2x-160=1520\ \ \ | add\ 160\\2x=1680\ \ \ | divide\ by\ 2\\x=840\\\\\ 840-160=680\\\\ Building\ A\ is\ 680\ feet\ tall\ and\ building\ B\ 840\ feet\ tall.`

Answer 2

Let building B=x
And building A= x-160

So your equation would be
x+x-160=1520
You need to combine like terms
2x-160=1520
Then you need to add 160 to both sides
2x=1680
To get x, divide both sides by 2
x=840

Now you need to plug x in.
Building A=840-160=680
Building B=x=840