30% x 1/3 + 2/5 : 2
=3/ 10 x 1/3 + 2/5 : 2/1
lalu 3 sama 3 dicoret
=1/10 x 1 + 2/5 x 1/2**
lalu 2 sama 2 dicoret
=1/10 + 1/5
=0.1 + 0.2 = 0.3 (3/10)
**(pecahan 2/1 dibalik karena dibagi)
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30% x 1/3 + 2/5 : 2
=3/ 10 x 1/3 + 2/5 : 2/1
lalu 3 sama 3 dicoret
=1/10 x 1 + 2/5 x 1/2**
lalu 2 sama 2 dicoret
=1/10 + 1/5
=0.1 + 0.2 = 0.3 (3/10)
**(pecahan 2/1 dibalik karena dibagi)