Answer: x=14
Explanation: the angle needs to equal the other angle, which is 63. To figure this out, we subtract 21 from 63. We get 42. 42 divided by 3 is 14. We are basically doing the equation in reverse.
Answer:
x equals 13
10 + x = 23
x=23-10
Step-by-step explanation:
A cheerful teen willing to help,
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Answer:
B c d
Step-by-step explanation: