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diketahui ⇒ 6=6a/a,.. 6,2=6a+7/a+1⇒ 6,2(a+1)= 6a+7
⇒ 6,2a+6,2=6a+7
⇒ 0,2a=0,8
⇒ a=4
jadi,banyak siswa semula = 4 orang,.
semoga membantu,jadikan yang teraik ya !
x
6x + 7 = 6,2 . x=6,2x
7 = 6,2x - 6x
7 = 0,2x
x = 7 : 0, 2= 35