Answer:
A
Step-by-step explanation:
I did the math i learned a few years ago and i got the answer A
5/2
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b+34-34=130
b+0=130
b=130-0
b=130
If r = 20, then plug 20 into the equation.
so instead of r - 9, it's 20 - 9
20 - 9 = 11