SOLUTION: -5/c=1/3 -6/13=8/(x+1) (r+2)/7=5/7

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Question 61633: -5/c=1/3
-6/13=8/(x+1)
(r+2)/7=5/7
Answer by funmath(2933) About Me  (Show Source):
You can put this solution on YOUR website!
Cross Multiply (a%2Fb=c%2Fd is ad=bc
-5%2Fc=1%2F3
-5(3)=c(1)
highlight%28-15=c%29
:
-6%2F13=8%2F%28x%2B1%29
-6(x+1)=8(13)
-6x-6=104
-6x-6+6=104+6
-6x=110
-6x%2F-6=110%2F-6
highlight%28x=-55%2F3%29
:
%28r%2B2%29%2F7=5%2F7
7(r+2)=7(5)
7r%2B14=35
7r%2B14-14=35-14
7r=21
7r%2F7=21%2F7
highlight%28r=3%29
Happy Calculating!!!