Question

(8/72+13/72)-12/72-(16/72-7/72)=

Answer 1

$displaystylett bigg(frac{8}{72} +frac{13}{72}bigg)-frac{12}{72}-bigg(frac{16}{72} -frac{7}{72}bigg)=frac{21}{72}-frac{12}{72}-frac{9}{72}=frac{0}{72}=0$