Question 977807
5x-10y=90 Solve for y?
<pre><font size = 4>
   5x-10y = 90 

Since you want to solve for y, get all terms off the left side 
except the -10y.  You want to get rid of the 5x term on the left.

To do that, add -5x to both sides:

  5x-10y = 90
 -5x         -5x
----------------
    -10y = 90-5x

Divide every number on both sides by -10

   {{{expr((-10)/(-10))y}}}{{{""=""}}}{{{90/(-10)-expr(5/(-10))x}}}

Simplify:

   {{{y}}}{{{""=""}}}{{{-9-expr(-1/2)x}}}

   {{{y}}}{{{""=""}}}{{{-9+expr(1/2)x}}}

Since you might want it in slope-intecept form y = mx+b you might
want to switch the two terms on the right

   {{{y}}}{{{""=""}}}{{{expr(1/2)x-9}}}

Edwin</pre>