Respuesta :

veedajb

Step-by-step explanation:

first question:

1/7 - 3/4 LCM : 28

4/28 - 21/28

= -17/28

second equation:

1/6 - 4/9 LCM : 36

6/36 - 16/36

= -10/36

= -5/14

( I believe these are the answers )

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