1. 3/9 + 5/7 = 2. 6/14 - 2/7 =

1. 3/9 + 5/7 =
2. 6/14 – 2/7 =

Jawaban:

1. 1 1/21

2.1/7

Penjelasan dengan langkah-langkah:

cara difoto

Gambar Jawaban

Jawab:

1. 1 1/21

2. 1/7

Penjelasan dengan langkah-langkah:

Menghitung hasil operasi bilangan pecahan

Mapel : Matematika

3/9 + 5/7

= $frac{(63 : 9 x 3) + (63 : 7 x 5)}{9 x 7}$

= $frac{21 + 45}{63}$

= $frac{66}{63}$

= $frac{66 : 3}{63 : 3}$

= $frac{22}{21}$

= $1 frac{1}{21}$

6/14 – 2/7

= $frac{(14 : 14 x 6) - (14 : 7 x 2)}{14}$

= $frac{6 - 4}{14}$

= $frac{2}{14}$

= $frac{2 : 2}{14 : 2}$

= $frac{1}{7}$

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