Question

What is the second step to solve the equation twelve minus a equals seven ?

Add 7

Add twelve

Divide by negative one

Subtract twelve

Answer 1

\[12-a=7\]?

Answer 2

yup

Answer 3

you got to subtract to find -a

Answer 4

there are many ways to solve this, so how can they ask "what is the second step"? question makes no sense

Answer 5

one way would be
\[12-a=7\]
\[-a=7-12=-5\]
\[a=5\] so i guess you could call the second step "divide by negative one" but that is rather silly

Answer 6

and that is just for one method
tell your teacher there is more than one way to skin a cat
also "divide by negative one" is the same as "multiply by negative one" is the same as "change the sign of both sides"
who wrote his???