Algebra fractions

[juspchy]

I have 3 questions I need help with can someone please help? These involve fractions.

1st question

solve for x
4/7x=20

2nd question

solve the equation
-3/5x=4/5

3rd question
Multiply.Give answer in the lowest term

21/25*10/117*27/14

 

[alohacharlie]

[attachment=0:2p1bv3o6]cross mult.jpg[/attachment:2p1bv3o6]

 

[alohacharlie]

[attachment=0:ialgudkb]reduced fraction.jpg[/attachment:ialgudkb]