Answer:
x = -4
Step-by-step explanation:
2(3x + 7) = -49 + 39
6x + 14 = -10
6x = -10 - 14
6x = -24
x = -4
You have x , x+7, and 7x-7. When you add those up and equal it to 180 you can get your x. X equals 20
So one angle is 20 degrees
The second angle is 27 degrees
And the third angle is 133 degrees.
Do u know the area of a circle
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