nilai x sama dengan.... a.6,7 cm b.5,0 cm c.4,1 cm d.3,8 cm tolong bantu:)

6/9 = 10/( x +10 )
<==> 6x + 60 = 10 x 9
<==> 6x + 60 = 90
<==> 6x = 30
<==> x = 30/6
<==> x = 5 cm.


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