The angles of a triangle are (x − 40)o, (x − 20)o and (1/2 − 10)o. Find the value of x.(in degree) *
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The sum of measures of angles of a triangles is 180 degrees
∴(x−40)+(x−20)+(x/2−10)=180o
∴5x/2−70o=180o
∴5x/2=250o
∴5x=500o
∴x=100o
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