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- Homework Statement
- How can I solve a system of equations with complex numbers

2z+w=7i

zi+w=-1

- Relevant Equations
- z=a+bi

How can I solve a system of equations with complex numbers

2z+w=7i

zi+w=-1

I have tried substituting z with a+bi and I have tried substituting w=7i-2z but didn't get anything useful.

Thank you

2z+w=7i

zi+w=-1

I have tried substituting z with a+bi and I have tried substituting w=7i-2z but didn't get anything useful.

**Edit**: also, I've tried, multiplying lower eq. with -1 so that I can cancel w but I get stuck with 2z and zi and I can't figure out what I am supposed to do with that.**Edit2:**also, I have tried replacing both z and w with a+bi but still nothingThank you