Question

a) a·3 = -30

Explanation:

Step1: Isolate the variable

To solve for \( a \) in the equation \( a \cdot 3 = -30 \), we need to isolate \( a \). We can do this by dividing both sides of the equation by 3.

$$ \frac{a \cdot 3}{3} = \frac{-30}{3} $$

Step2: Simplify both sides

Simplifying the left side, the 3 in the numerator and denominator cancels out, leaving \( a \). On the right side, dividing -30 by 3 gives -10.

$$ a = -10 $$

Answer:

\( a = -10 \)