Solve systems of first-order differential equations using substitution or elimination method

[Imbra]

Could you help me out with this example?

 

[Deleted member 4993]

View attachment 23733
Could you help me out with this example?

Please show us what you have tried and exactly where you are stuck.

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Please share your work/thoughts about this problem.

 

[Imbra]

Those are my calculations but I'm not sure of them