Question

$(\frac{1}{2} +\frac{1}{5} ) + (\frac{2}{3} -\frac{1}{4} ) - (\frac{-1}{2} )$ hf

Answer 1

= 1/2+1/5+2/3-1/4+1/2
= 1/2+1/2+1/5+2/3-1/4
= 2/2 + 1/5 + 2/3 - 1/4
= 1 + 1/5 + 2/3 -1/4
= (5+1)/5 + (4.2-3)/12
= 6/5 + (8-3)/12
= 6/5 + 5/12
Mmc (12,5)= 60
= (12.6 + 5.5)/60
= (72+25)/60
= 97/60

R.: 97/60