how can i evaluate this expression 3/2-4/7
\(\frac{3}{2} - \frac{4}{7}\)\(= \frac{3}{2} + \frac{-4}{7}\)\(= \frac{21}{14} + \frac{-8}{14}\)\(= \frac{21+-8}{14}\)\(= \frac{13}{14}\)Decimal: 0.928571
\(simple\ method:\\\\\dfrac{a}{b}-\dfrac{c}{d}=\dfrac{ad-bc}{bd}\\==================\\\dfrac{3}{2}-\dfrac{4}{7}=\dfrac{3\cdot7-2\cdot4}{2\cdot7}=\dfrac{21-8}{14}=\boxed{\dfrac{13}{14}}\)
