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Gekata [30.6K]
4 years ago
13

What is the value of x?

Mathematics
1 answer:
OverLord2011 [107]4 years ago
4 0
This is Equilateral Triangle where all the angles are same.

The total angle of a triangle is 180. So angle 1 + angle 2 + angle 3 = 180. (angle 1 = angle 2 = angle 3)

60 + 60 + 60 = 180
all the angles equal to 180.

Now to find value of x:
We know from above information that the angle is equal to 60.

7x - 3 = 60
7x = 60 + 3
7x = 63
x = 63/7
x = 9

Answer: x = 9

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Answer: a=-0.75

Step-by-step explanation:

14a - (2a +9)=2/3 (12a-18)​

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