Question

calculeaza: 1/2-(1/3+1/4-1/5)

Answer 1

$\frac{1}{2} -( \frac{1}{3} + \frac{1}{4} - \frac{1}{5} )= \frac{30-20-15+12}{60} = \frac{7}{60}$

Answer 2

1/2-(1/3+1/4-1/5)=1/2-(20/60+15/60-12/60)=1/2-23/60=30/60-23/60=7/60