Question

How do you solve the volume formula R = 8k + d, for d ?

Answer 1

`" "`
`d=R-8K`

Explanation:

`" "`
We are given the formula : `color(red)(R=8k+d`

We are asked to make `color(red)(d)` as the subject.

Consider `R=8k+d`

Subtract `color(blue)(d` from both sides of the equation.

`color(red)(R-color(blue)(d)=8k+d-color(blue)(d)`

`color(red)(R-color(blue)(d)=8k+cancel d-color(blue)(cancel d)`

`R-d=8k`

Subtract `color(blue)(R` from both sides of the equation.

`R-d-color(blue)(R)=8k-color(blue)(R`

`cancel R-d-color(blue)(cancel R)=8k-color(blue)(R`

`-d=8k-R`

Multiply both sides of the equation by `color(blue)((-1)`

`color(blue)((-1)-d=(-1)[8k-R]`

`d=-8k+R`

`or`

`d=R-8K`

This is our required answer.