I Need A Little Help With Algebra

Well I am doing my packet I have to do before I go into Honors Algebra next semester, and I have completely forgotten how to do one part. This is the part...

12+b=g b+g=32

Now i am pretty sure I need to do substitution but I have completely forgotten how. There are like 5-10 problems like this but if somebody can just tell me how to do this one I can figure out the rest on my own. Thanks in advance.

12+b=gb+g=32
12+b=32
b=32-12
b=20
20g+g=32
21g=32
g=32/21

Ans: b=20, g=32/21

Those were too seperate equations.

12+b=g and b+g=32

-Substitution
b+(12+b)=32
2b+12=32
b=10
12+10=g
22=g

I wish that was the answer but it cant be because it says there are 12 more girls than boys. (g=girls b= boys)

Edit: Here is where the problem in words. That might not be the equation. That was what I thought the equation was.

In the chorus there are 12 more girls than boys. There are 32 students in the chorus. How many boys are there? How many girls are there?

D'oh.
12+b=g
b+g=32

b=g-12
b=32-g
g-12=32-g
32=2g-12
2g=44
g=22

b=22-12
b=10

g=22, b=10

thank you.

Don't ask me I got kicked out of Pre-Algebra. IN 7th GRADE!

I fixed it but too late, oh well

dammit, too late.

I did Algebra in 8th grade and passed! Now I have to deal with shitty Algebra 2. God damn absolute graphs.

Never liked maths.In 3rd year I had a real bastard of a teacher he thought he was the hard man I put him down.He was younger than my cousin whos 29.I actually went up to him outside a pub and headbutted the cunt.Very awkard for him in class so he just banned from the class for not having any homework done,not taking down schoolwork,disrespecting teacher because I called by his first name Tim,bad conduct,noise in class

So you headbutted your teacher for doing his job?

It was outside of school and hes a dick who would purposely try to get me in trouble and tried to be funny

Totally justified assault, but hey I digress, to each his own.