Find the value of x, showing all steps. (3 pts.)​

Find The Value Of X Showing All Steps 3 Pts class=

Answer :

Answer:

11

Step-by-step explanation:

42 + 39= 81 and you need to get to 180 so the 3rd angle would be 99 so 99 dived by 9 is 11 so x=11

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