# How do you solve 81=2.7b?

Sep 9, 2016

I found: $b = 30$
We can multiply both sides by $10$:
$10 \cdot 81 = 10 \cdot 2.7 b$
$810 = 27 b$
rearrange to isolate $b$:
$b = \frac{810}{27}$
dividing we get: $b = 30$