Question

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

Answer 1

Answer:

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

Answer:

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

Step-by-step explanation:

$a=m-n$

Adding $n$ to both sides.

$a+n=m-n+n$

$a+n=m$

Subtracting $a$ from both sides.

$a+n-a=m-a$

$n=m-a$