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Fed [463]
3 years ago
12

Get 14 points, Plz help me with this question, and give the right answer cause it's important

Mathematics
2 answers:
garri49 [273]3 years ago
6 0

Answer:

it's 20

Step-by-step explanation:

(X+5)° + (7x-5)° + x°= 180° { sum of the three angles of the triangle is 180°}

X+5+7x-5+X = 180

X+7x+X+5-5= 180

9x+0 = 180

9x = 180

therefore X= 180/9

= 20

Nitella [24]3 years ago
5 0

All angles are of triangle and thus give sum of 180⁰

x + 5 + 7x - 5 + x = 180⁰

9x = 180⁰

x = 20⁰

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