Cuanto es 3/5 menos 6/9​

3/5 - 6/9:

3/5 = 3•9 / 5•9 = 27/45

6/9 = 6•5 / 9•5 = 30/45

3/5 - 6/9 = 27/45 - 30/45

               = 27-30 / 45

               = –3/45

               = –1/15

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer

51-50

step-by-step explanation: