(1 17/18*1 13/14-2 5/8:1 19/20):(2 25/78-1 1/26)

Question

(1 17/18*1 13/14-2 5/8:1 19/20):(2 25/78-1 1/26)

Answer 1

(1 17/18×1 114-2 5/8÷1 19/20)÷(2 25/78-1 1/26)=1 91/104
1) 1 17/18×1 13/14=35/18×27/14=5×3/2×2=15/4
2) 2 5/8÷1 19/20=21/8÷39/20=21×20/8×39=7×5/2×13=35/26
3) 15/4-35/26=195-70/52=125/52
4) 2 25/78-1 1/26=181/78-27/26=181-81/78=100/78=50/39
5) 125/52÷50/39=125/52×39/50=25×39/52×10=975/520= 1 целая 455/5201 91/104