Question

12*5-4+56:6+456*786:43

Answer 1

12*5-4+56:6+456*786:43=8400 76/129
12*5=60
56:6=9 1/3
456*486=358416
358416:43=8335 11/43
60-4=56
56+9 1/3=65 1/3
65 1/3+8335 11/43= 8400+(1/3+11/43)=8400+(1*43/129+11*3/129)=8400 76/129