3r/4= 1/8 what's the value of r
Multiplying both sides by 8, we see that 6r=1. Dividing by 6, r=1/6.
\(\frac{3r}{4} =\frac{1}{8}\)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 :)
