Question

-5/7x 5/7 - 1/2 x 4/5 - 1/12 x 5/7​

Answer 1

Answer:

$- 5 \div 7 \times 5 \div 7 - 1 \div 2 \times 4 \div 5 - 1 \div 12 \times 5 \div 7 \\ = - 25 \div 49 - 4 \div 20 - 5 \div 84 \\ =(( - 25 \times 20) - ( - 4 \times 49)) \div (20 \times 49) -5 \div 84 \\ = ((- 500 + 196)) \div 980 - ( 5 \div 84) \\ = - 304 \div 980 - 5 \div 84 \\ = (( - 304 \times 84) - ( 5 \times 980)) \div 980 \times 84 \\ =( 25536 - - 4900) \div 82380 \\ = 20636 \div 82380$