How do you solve for y in #9-y=1.5x#?
1 Answer
Dec 29, 2015
OR
Explanation:
There are two methods for rearranging this equation.
Term Transaction
- Add
#y# to both sides of the equation:
#9 = 1.5x + y# - Subtract
#1.5x# from both sides of the equation:
#9 - 1.5x = y" or "y = 9 - 1.5x#
Notice that the variables have simply changed places and reversed their signs.
Multiply through by #-1#
- Subtract 9 from both sides of the equation:
#-y = 1.5x - 9# - Multiply both sides of the equation by
#-1# :
#-1(-y) = -1(1.5x - 9)#
#y = -1.5x + 9" or "y = 9 - 1.5x#