Answer:
addition prop of equality
Step-by-step explanation:
youre welcome
12 + 0.35X = 20.05
12 + 0.35X - 12 = 20.05 - 12
0.35X = 8.05
0.35X/0.35 = 8.05/0.35
X = 23
Hope this helps!!
Identify the angle variable to use.
Write an equation.
Solve the equation for the variable.
Find the unknown angle measure.
I hope you will like my answer