Question

How do you solve for J in `M+DJ=T`?

Answer 1

`J=(T-M)/D`

Explanation:

`M+DJ=T`

The idea is to get `J` on the left and all the other stuff to the right

Let's move `M` to the right. To do that let's subtract `M` from both sides
`\cancelM+DJ\cancelcolor(blue)(-M)=T\color(blue)(-M)`

And we get
`DJ=T-M`

To reach our objective we can divide both sides by `D`
`(\cancel(D)J)/color(red)cancel(D)=(T-M)/\color(red)D`

And the solution is:
`J=(T-M)/D`