1. 1 3/5 + 2 4/15
2. (-7/5) + (14/3)
3. 5/7 + (-1/3)
4. 3/4 + (-2/3)
5. 3/4 × (-2/3)
6. (-3/4) ÷ (-1/3)
7. (-3 2/5) × (-7 2/3)
8. (-5/4) ÷ (25/2)
Jawab:
1. 3 13/15
2. 6 1/15
3. 1
4. 1 5/12
5. 6 3/4
6. 2 1/4
7. 25
8. 1/10
Penjelasan dengan langkah-langkah:
1. 1 3/5 + 2 4/15 =
= (1 3/5 x 3/3) + 2 4/15
= 1 9/15 + 2 4/15
= (1 + 2) + (9/15 + 4/15)
= 3 13/15
2. (-7/5) + (14/3)
= 7/5 + 14/3
= 1 2/5 + 4 2/3
= (1 + 4) + ((2/5 x 3/3) + (2/3 x 5/5))
= 5 + (6/15 + 10/15)
= 6 1/15
3. 5/7 + (-1/3)
= (5/7 x 3/3) + (1/3 x 7/7)
= 15/21 + 7/21
= 21/21
= 1
4. 3/4 + (-2/3)
= (3/4 x 3/3) + (2/3 x 4/4)
= 9/12 + 8/12
= 1 5/12
5. 3/4 × (-2/3)
= 3/4 x (-2/3
= (3/4 x 3/3) x (2/3 x 4/4)
= 9/12 x 8/12
= 81/12
= 6 9/12
= 6 3/4
6. (-3/4) ÷ (-1/3)
= (3/4 x 3/3) ÷ (1/3 x 4/4)
= 9/12 ÷ 4/12
= 2 1/4
7. (-3 2/5) × (-7 2/3)
= (3 2/5 x 3/3) x (7 2/3 x 5/5)
= 3 6/15 x 7 10/15
= (3 x 7) + (6/15 x 10/15)
= 21 + 60/15
= 25
8. (-5/4) ÷ (25/2)
= 5/4 ÷ 25/2
= 1 1/4 ÷ 12 1/2
= 1 2/8 ÷ 12 4/8
= 1/10
Ini bikin aku pegal banget, please bikin Tecerdas
Maaf jika salah, semoga membantu
#semogamembantu #brainly
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