Multiply the amount of inches it is by 30 and you will know what the size is in feet.
If you calculated it you would get 20.25 so it is irrational
15x2+10x-9x+7
8x3+20x2+3x+12
11x4+4x2-6x2-16
Hope this helps !!
You can use any letter but when you label it x you find x
Subtract 2x from each side
2x+3=4x+1
-2x -2x
3=2x+1
subtract 1 from each side
3=2x+1
-1 -1
2=2x
divide each side by 2
2=2x
1=x
