Question

I need help solving these!!

Solve for the indicated variable.

A = LW; for L

How do I solve it?What do i do???

Solve for the indicated variable.

P = 3r + 2s; for s

Answer 1

Solve for the indicated variable means isolate that variable.
A = LW.
To isolate L, divide both sides by W.
What do you get?

Answer 2

L

Answer 3

a/w

Answer 4

Yes L = A/W is the answer to the first question.

Answer 5

so thats all im doing just isolating to get my answer?

Answer 6

Yes.

Answer 7

on the next question i subtract both sides by 2?or I could divide them by 2 I suppose?

Answer 8

No. First you isolate s. It means just keep s alone on one side. Get rid of the other things on the side of s.
P = 3r + 2s
To have only s on the right hand side first I got to subtract 3r from both sides.
What is the equation you get?

Answer 9

(P - 3r)/2

Answer 10

Yes!
But write it as s = (P - 3r)/2

Answer 11

How are you so smart?

Answer 12

Different people have different things that come easy to them.
Every one has different gifts.

Answer 13

But how do I know when to add or subtract on these type of problems?