1.) 1 74/819
2.) 37/100
3.) 16/25
Penjelasan dengan langkah-langkah:
1.) 15/13 - 2/7 + 2/9 =
= 945/819 - 234/819 + 182/819
= 893/819
= 1 74/819
2.) 3/10 × 2/5 + 1/4 =
= 6/50 + 1/4
= 3/25 + 1/4
= 12/100 + 25/100
= 37/100
3.) 6/15 ÷ 1/2 × 4/5 =
= 6/15 × 2 × 4/5
= 12/15 × 4/5
= 48/75
= 48/75 ÷ 3/3
= 16/25
1. 15/13 - 2/7 + 2/9
= ../819 - ../819 + ../819
= (819 ÷ 13 × 15)/819 - (819 ÷ 7 × 2)/819 + (819 ÷ 9 × 2)/819
= 711/819 + 182/819
2. 3/10 × 2/5 + 1/4
= (3 × 2)/(10 × 5) + 1/4
= ../100 + ../100
= (100 ÷ 50 × 6)/100 + (100 ÷ 4 × 1)/100
3. 6/15 ÷ ½ × ⅘
= 6/15 × 2/1 × 4/5
= (6 × 2 × 4)/(15 × 1 × 5)
= (12 × 4)/(15 × 5)
= 48/75 (dapat disederhanakan)
= (48 ÷ 3)/(75 ÷ 3)
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1.) 1 74/819
2.) 37/100
3.) 16/25
Penjelasan dengan langkah-langkah:
1.) 15/13 - 2/7 + 2/9 =
= 945/819 - 234/819 + 182/819
= 893/819
= 1 74/819
2.) 3/10 × 2/5 + 1/4 =
= 6/50 + 1/4
= 3/25 + 1/4
= 12/100 + 25/100
= 37/100
3.) 6/15 ÷ 1/2 × 4/5 =
= 6/15 × 2 × 4/5
= 12/15 × 4/5
= 48/75
= 48/75 ÷ 3/3
= 16/25
Penjelasan dengan langkah-langkah:
1. 15/13 - 2/7 + 2/9
= ../819 - ../819 + ../819
= (819 ÷ 13 × 15)/819 - (819 ÷ 7 × 2)/819 + (819 ÷ 9 × 2)/819
= 945/819 - 234/819 + 182/819
= 711/819 + 182/819
= 893/819
= 1 74/819
2. 3/10 × 2/5 + 1/4
= (3 × 2)/(10 × 5) + 1/4
= 6/50 + 1/4
= ../100 + ../100
= (100 ÷ 50 × 6)/100 + (100 ÷ 4 × 1)/100
= 12/100 + 25/100
= 37/100
3. 6/15 ÷ ½ × ⅘
= 6/15 × 2/1 × 4/5
= (6 × 2 × 4)/(15 × 1 × 5)
= (12 × 4)/(15 × 5)
= 48/75 (dapat disederhanakan)
= (48 ÷ 3)/(75 ÷ 3)
= 16/25