Question: How do i solve this system of differential equations?

I'm having trouble solving this system of differential equations. I haven't solved systems of differential equations before but i tried defining the system and then using dsolve, but it couldn't solve all the equations.

Hope you can help.

NULL

diff(Q1(t), t) = -k1*Q1(t)

 

diff(Q2(t), t) = k1*Q1+k3/Q2(t)-k2*Q2(t)-k4*Q2(t)

 

diff(Q3(t), t) = k4*Q2

 

diff(Q4(t), t) = k2*Q2-k3/Q2

 

NULL

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