Question

2r- (5-r) = 13+ 2r

Answer 1

2r + (-1)(5-r) = 13+ 2r

can you solve it now

Answer 2

r = 18

Answer 3

@Australopithecus I got that, I'm just not sure what do with all these "r's"

Answer 4

Can you write out the expanded version?

Answer 5

or as far as you got

Answer 6

I can show you where to go from where you have gotten to or if you are on the right track

Answer 7

2r(-5+r)=13+2r Is that right?

Answer 8

Then you subtract the 2's from each side correct?

Answer 9

I don't know how you got to where you are to be honest.

first thing you should do is expand (-1)(5-r)

2r + (-1)(5-r) = 13+ 2r

Answer 10

do you know how to expand (-1)(5-r)?

it is easy just use the rule

a(b+c) = a(b) + a(c)

where a, b, and c are just any number

Answer 11

also recall that

a negative * a negative = a positive
a negative * a positive = a negative
a positive * a positive = a positive

or

- * + = -
- * - = +
+ * + = +

Answer 12

Thanks! My dad just helped me out a little too, that's all for my homework, I have to sleep now thanks again!

Answer 13

The answer is 18 right? Before I go to bed.

Answer 14

no problem
2r- (5-r) = 13+ 2r
-2r + 2r - (5-r) = 13 + 2r - 2r
-(5-r) = 13
-5 + r = 13
5 + r = 13 + 5
r = 18

Answer 15

Thanks! You helped a lot!

Answer 16

(-1)(5-r) = (-1)(5) + (-1)(-r)

Answer 17

just to clarify