Question

Question was provided via image upload.

Explanation:

Step1: Apply distributive property

$15(5y + 2) = 75y + 30$, so the first blank is $75y$.

Step2: Combine like terms

$30 - 15 = 15$, so the second blank is $15$.

Step3: Isolate the variable term

Subtract 15 from both sides: $75y + 15 - 15 = 15 - 15$, so $75y = 0$.

Step4: Solve for $y$

Divide both sides by 75: $y = \frac{0}{75} = 0$.

Step5: Identify missing description

The step combining $30-15$ is "Combine like terms".

Answer:

First blank: $75y$
Second blank: $15$
Third blank: $0$
Fourth blank: $0$
Missing description: Combine like terms