Question

(1 - 3/4) *(4/5-3/4)=.......... 14* (1/2+1/3+1/4)=....

Answer 1

1) 1-3/4=4/4-3/4=1/4
    4/5-3/4=16/20-15/20=1/20
    1/4*1/20=1/80
2) 1/2+1/3+1/4=6/12+4/12+3/12=13/12
    14*13/12=91/6=15 1/6