EvelynJ EvelynJ

13-01-2017
Mathematics

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When I am trying to solve this problem how do I find x?

When I am trying to solve this problem how do I find x class=

Respuesta :

13-01-2017

angle KJI= angle KJF + angle FJI
=>12x+20=7x+75
=>12x-7x=75-20
=>5x=55
=>x=55/5
=>x=11

therefore, angle KJF= 7×11= 77 degrees
and angle KJI= 12×11+20= 132+20= 152 degrees

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