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katerin4738
05.05.2020 •
Mathematics
Need help with this!!
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Ответ:
80/9
Step-by-step explanation:
The sum of the angles of a triangle is 180. This means your equation will bw:
3x+70 + 5x + x+30 = 180
Add Like Terms
9x + 100 = 180
9x = 80
x = 80/9
Ответ: