Question

check all equations that are equivalent.
□ ( a = 180(n - 2) )
□ ( n = \frac{a}{180} + 1 )
□ ( n = \frac{a}{180} + 2 )
□ ( n = \frac{a + 360}{180} )
done

Explanation:

Step1: Start with original equation

$a = 180(n - 2)$

Step2: Divide both sides by 180

$\frac{a}{180} = n - 2$

Step3: Isolate $n$ (add 2 to both sides)

$n = \frac{a}{180} + 2$

Step4: Rewrite to match alternative form

$n = \frac{a}{180} + \frac{360}{180} = \frac{a + 360}{180}$

Answer:

• $a = 180(n - 2)$
• $n = \frac{a}{180} + 2$
• $n = \frac{a + 360}{180}$