Posted by brooke on Tuesday, April 12, 2011 at 9:34pm.
no. the third line should read
15r+r-3r=35-9
from the 2nd line, when -35 is transposed to other side,
15r - 35 + r = 3r - 9
15r + r - 3r = 35 - 9
...it must be positive 35. you forgot to change its sign.
Oh so you are saying that the 35 should be a positive instead of a negative. Is that correct!!So the answer for r is 2. Thanks I think I get it.
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