21+21+9+9=
2(9+21)=
Hope this helps
Hello there!

Add 5x to both sides:

Add 14 to both sides:

Now divide both sides by 8:

In our last step, we will simplify 16/8:

Hope this helps!

Answer: What you should do is 27 tens divided by three tens.
Step-by-step explanation:
This is because imagine it was 27 divide by 3. That will be 9 so then you just multiply that by one thousand
The general solution, y(t), which solves the problem by the method of integrating factors is; y = ¹/₂₁t⁴ + (1/t)c₁t^(⁴/₅)
<h3>How to solve differential equations?</h3>
We want to find the general solution of;
5t(dy/dt) + y = t⁴
We will divide through by 5t to get;
(dy/dt) + y/5t = t³/6
Using Integration factor, we have;
u(t) = e^∫(¹/₅t) dt = t^(¹/₅)
Thus, we now have;
[t^(¹/₅)](dy/dt) + [t^(¹/₅)]y/5t = [t^(¹/₅)]t³/6
Completing this with a differential calculator gives us the general solution as;
y = ¹/₂₁t⁴ + (1/t)c₁t^(⁴/₅)
Read more about differential equations at; brainly.com/question/17201048
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9 is 9 and if you need to answer 9 put 9 to get the right answer put 9 okay