The three angles of a triangle are (3x)°,(2x+60)° and (5x-40)°. Find the value of x
1. 13
2. 16
3. 17
4. 15
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Step-by-step explanation:
Sum of all angles of triangle is 180 °
3x + 2x+60° + 5x-40°. = 180°
10x = 160 °
x = 16 °
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