(6,5 kg + 7 ¼ kg)x½ Tolong jawab pakai cara ya ?

6,5 = 65/10
7 1/4 = 29/4

→ dirubah dulu penyebutnya
= ( 130/20 + 145/20 ) x 1/2
= 276/20 x 1/2
= 55/8 = 6,875