40 = 9+7+6+5+3+3x+2x
40 = 30 + 5x
40 - 30 = 5x
10 : 5 = x
2 = x
Ahli bagian dua kelab (kelab radio dan pemain tenis) sahaja = 3x
= 3(2) =6
Kelab radio dan kelab sains = 7
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40 = 9+7+6+5+3+3x+2x
40 = 30 + 5x
40 - 30 = 5x
10 : 5 = x
2 = x
Ahli bagian dua kelab (kelab radio dan pemain tenis) sahaja = 3x
= 3(2) =6
Kelab radio dan kelab sains = 7