Find the value X on the given figure

Dear Student ,

Given : let A=4x+12B=5x-3and C=xUsing angle sum property for trianglesum of three angles of triangle is 180°Now , A+B+C=180°4x+12+5x-3+x=180°10x+9=180°10x=180-910x=171x=17.1Therefore value of x=17.1°

Regards

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