How do you solve the equation #x - 2y =-7#?

1 Answer
Apr 29, 2015
  • There is no way in which we solve for unique values of #x and y# using just this one equation

  • But we can represent #x# in terms of #y# or vice versa

Transposing #-2y# to the right hand side would give us:

#x = 2y - 7# (#x# in terms of #y#)

Now transposing 7 to the Left hand side would give us:

#x + 7 = 2y#

Dividing both sides by 2 will give us:

#(x+7)/2 = (cancel(2)y)/cancel(2)#

# y = (x+7)/2# (#y# in terms of #x#)