(61\4 -41\8)*4+31\3:21\2

Question

(61\4 -41\8)*4+31\3:21\2

Answer 1

61/4*4-41/8*4+31/3*2/21=61-82+62/63=(61*63-82*63+62)/63=(3843-5166+62)63=-1261/63=-20целых1/63