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frosja888 [35]
3 years ago
13

Find the value of X ​

Mathematics
2 answers:
Basile [38]3 years ago
4 0

x + 3x + 80 = 180 \\ 4x = 180 - 8 0 \\ 4x = 100  \\ x =  \frac{100}{4}  \\ x = 25 \:  \:  \:

sweet [91]3 years ago
3 0

The sum of all the angles of the triangle is 180°.

80 + 3x + x = 180°

80 + 4x = 180°

4x = 180 - 80

4x = 100

x = 100/ 4

x= 25

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