example:              Start out writing the problem
7x+7=2(x+1)     Use distributive proper to get rid of parantheses
7x+7=2x+2       Subtract 2x from each side
5x+7=2               Subtract 7 from each side
5x=-5                   Divide 5 from both sides
x=-1                      You should end up with -5/5 which equals -1

Now to Literal Equations.....

Example:                         We will use electric charge, and will be solving for I
Q=It                                 The only thing needed to be done is.... divide t from both sides
Q/t=I                               This is what it should end up looking like

Last but not least, 3 forms of a line Equations....

Example:                     We will use a slope of 3 and a point of (0,6)
y-6=3(x-0)                  Begin using slope intercept form
y-6=3x                        Use distributive property
y=3x+6                       Single out the y, this makes it Slope-Intercept form
-3x+y=6                      Subtract 3x from both sides to get standard form
3x-y=-6                       Multiply everything by -1 to make the standard form look better
 

Here are some pages to check out:
<--------UGHS website
<------Other student's pages
<---------More math help