Question

solve for the value of a.
answer attempt 1 out of 2
a =

Explanation:

Step1: Use the linear - pair property

The sum of angles in a linear pair is \(180^{\circ}\). So, \(104+(8a - 4)=180\).

Step2: Simplify the left - hand side

Simplify \(104+(8a - 4)\):
\(104 + 8a-4=8a+(104 - 4)=8a + 100\).
The equation becomes \(8a+100 = 180\).

Step3: Solve for \(a\)

Subtract \(100\) from both sides:
\(8a+100-100=180 - 100\), which gives \(8a=80\).
Divide both sides by \(8\): \(a=\frac{80}{8}\).

Answer:

\(a = 10\)