How can solve this differential equation with two variables?

diff(b,a,t) == -db/dt == -6.73x10^-8x(10^-8.5)^(-0.82)x a^0.75 x b^3

[madhan ravi]

Can you upload a photo of the equation or latex form because the equation you gave is not clear.

[Duong Nguyen]

Here is it, Madhan. Thank you for your help.

[Stephan]

See here:

https://de.mathworks.com/matlabcentral/answers/422920-how-can-solve-this-system-of-differential-equations-with-two-variables-x-y-i-will-attach-a-photo-t

[KALYAN ACHARJYA]

@Duong Please don't post the same question, again and again,, in your previous question, is answered by @Stephan, if you have any doubt, you can ask it in the comment section of the respective answer.