# B Showing rearrangement in maths paper

1. Aug 27, 2016

### Einstein's Cat

I am currently writing my first mathematics paper but I don't know how to formally represent and show the process of rearranging a certain equation; for example what symbols would I use etc..?

2. Aug 27, 2016

### Staff: Mentor

3. Aug 27, 2016

### Staff: Mentor

If your question here is related to a recent post about solving the equation Ax + By + C = 0 for one of the variables, the best thing to do is to forget symbols, and just say in words what you're doing at each step.

Last edited by a moderator: Aug 27, 2016
4. Aug 27, 2016

### Staff: Mentor

5. Aug 28, 2016

### Einstein's Cat

Say I have an equation of a+b= c and I intend to make b the subject then I'll just subtract a from both sides of the equation giving b= c- a; how would I show this rearrangement in a paper mathematically and formally?

6. Aug 28, 2016

### Math_QED

a + b = c
=> b = c - a

or you can use the <=> too in this case.

7. Aug 28, 2016

### Staff: Mentor

At school we used
$a+b=c\; \vert \, -a$
$b = c-a$