Question

Solve the equation a = m – n for the variable n

Answer 1

a=m-n

(Add n to both sides)

a+n=m-n+n

(The -n and +n cancel out, on the right side of the equation)

a+n=m

(Now subtract a from both sides)

a+n-a=m+a

(The +a and -a cancel out, on the right side of the equation)

n=m+a

Answer 2

`\huge \boxed{n=-a+m}`

Explanation:

`a=m-n`

Adding
`n` to both sides.

`a+n=m-n+n`

`a+n=m`

Subtracting
`a` from both sides.

`a+n-a=m-a`

`n=m-a`