х=10
I'm so sorry, i don't know how it's called (because English isn't my native language) but there are angles that have the same value
maybe u'll tell me..
1. given
2. transitive prop of equality
3. subtraction property of equality<span />
21.925....................Maybe
Step-by-step explanation: 1 will now become a 2, so the answer is 1.2.1,