Question 79327
As long as you do the same thing to both sides
of the equation, the equation doesn't change.
This is like putting 10 pound weights on both sides of a balence
scale that already balences.
{{{3 = 4 - 1/5w }}}
What should I do to both sides? First, I'd like to get the {{{1/5w}}}
alone by itself, so I'll subtract 4 from both sides
{{{3 - 4 = -(1/5w)}}}
{{{-1 = -(1/5w)}}}
The minus signs on both sides is awkward. I'll multiply
both sides by {{{-1}}}
{{{1 = 1/5w}}}
To solve for {{{w}}}, I've got to get it out of the 
denominator (bottom) of the fraction. Multiplying
both sides by {{{5w}}} will accomplish this.
{{{1*5w = (1/5w)*5w}}}
{{{5w = 1}}}
Divide both sides by 5.
{{{w = 1/5}}}