Question

$\frac{b - 4}{6 } = \frac{b}{2}$
Can somene explain how to do this please. ​

Answer 1

Use cross-multiplication

$\frac{b - 4}{6} = \frac{b}{2}\\2(b- 4) = 6b\\2b - 8 = 6b\\2b - 6b = 8\\-4b = 8\\b = -2$