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Andrei [34K]
3 years ago
10

3r/4= 1/8 what's the value of r

Mathematics
2 answers:
olya-2409 [2.1K]3 years ago
8 0
\frac{3r}{4} =\frac{1}{8}

Cross multiply.
Note: \sf\frac{a}{b} = \frac{c}{d} \to ad=bc

Cross multiplying we get:

3r(8) = 4(1) \\ 24r = 4\\r = \frac{4}{24} \\\\r=\frac{1}{6}

I hope that helps :)
tino4ka555 [31]3 years ago
5 0
Multiplying both sides by 8, we see that 6r=1.  Dividing by 6, r=1/6.
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