Question

How do you solve `\frac { 1} { w - 8} = 4`?

Answer 1

A neat shortcut
`w=8 1/4 -> 33/4`

Explanation:

Write as `1/(w-8)=4/1`

We are trying to find the value of `w` so turn every thing upside down.

`(w-8)/1=1/4 larr" Really cool isn't it!"`

Add 8 to both sides

`wcolor(white)("d")=color(white)("d")1/4+8color(white)("d") =color(white)("d") 8 1/4`