3х-5у=-15

To solve the equation \( 3x - 5y = -15 \) for one variable in terms of the other, you can isolate either \( x \) or \( y \). Here are both options:

Solve for \( y \) in terms of \( x \):

1. Start with the equation:
   \[ 3x - 5y = -15 \]
2. Add \( 5y \) to both sides:
   \[ 3x = 5y - 15 \]
3. Add 15 to both sides:
   \[ 3x + 15 = 5y \]
4. Divide by 5:
   \[ y = \frac{3x + 15}{5} \]

Solve for \( x \) in terms of \( y \):

1. Start with the equation:
   \[ 3x - 5y = -15 \]
2. Add \( 5y \) to both sides:
   \[ 3x = 5y - 15 \]
3. Divide by 3:
   \[ x = \frac{5y - 15}{3} \]

You can use either of these expressions based on your requirements. If you need further assistance, feel free to ask!