memester74
21.05.2020 •
Mathematics
Please help i wanna move to the next grade,10 points
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Ответ:
19
Step-by-step explanation:
1. one line = 180 degrees --> (4v+3) + (5v+6) = 180
2. solve: 9v+9=180
3. simplify: 9v=180-9 => 9v=171
4. divide both sides with 9 to make "v" alone without 9
--> 9v / 9 = 171 / 9 => v=19