Angles of quadrilateral are 4×°,5[×+2]°,[7×-20°]and6[×+3]°.find:-the value of ×,each angle of quadrilateral
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4x+(5x+10)+(7x-20)+6x+18 = 360
22x+8 = 360
22x = 360 - 8
22x = 352
x = 352/22
x = 16
4x = 4*16 = 64
5x+10 = 90
7x-20 = 92
6x+18 = 114
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