-3/11/-6/7 (note:here is double division hence -7 will be moved to numerator)

-3*7/-11*6

21/66=0.3181 answer

0r another method

-3/11 divided by (-6/7)

note:divided by (-6/7) is converted into multiply by -7/6

once again note:fraction((-6/7)) when multiply with another fraction....denominator and numerator interchange....its a basic math rule.....you should understand that ok

-3/11 * or multiply -7/6

now -3*7 and 11 * 6 note minus - minus cancel each other

21/66=0.3181 answer

proof check on line calculator on google.....enter the two fraction will give the same answer ok.proof