Jawaban:
1. 2 × 4 3/8 - 5 3/4 = 2/1 × 35/8 - 23/4
= 2/1 × 35/8 - 46/8
= 70/8 - 46/8
= 24/8
= 3
2. 1,25 - 0,5 × 1/4 = 125/100 - 5/10 × 1/4
= 125/100 - 50/100 × 1/4
= 125/100 - 50/400
= 500/400 - 50/400
= 450/400 : 50/50
= 9/8
= 1 1/8
3. 1/4 + 1,5 : 0,25 = 1/4 + 15/10 : 25/100
= 5/20 + 30/20 : 25/100
= 35/20 : 25/100
= 35/20 × 100/25
= 175/25
= 7
4. 2 4/5 × 1/8 - 0,15 = 14/5 × 1/8 - 15/100
= 14/40 - 15/100
= 70/200 - 30/200
= 40/200 : 40/40
= 1/5
5. 14,1 : ( 1 3/5 + 75% ) = 141/100 : ( 8/5 + 75/100 )
= 141/100 × ( 160/100 + 75/100)
= 141/100 × 235/100
= 33.135/10.000 : 5/5
= 6.627/2.000
= 3 627/2.000
itu jawabanny, oke.
Penjelasan dengan langkah-langkah:
#tolongjadikanjawabantercerdas
Jawaban:
[tex]1)2 \times 4 \frac{3}{8} - 5 \frac{3}{4} \\ \frac{2}{1} \times \frac{35}{8} - \frac{23}{4} \\ = \frac{70}{8} - \frac{23}{4} \\ = \frac{70}{8} - \frac{46}{8} \\ = \frac{24}{8} \\ = \frac{3}{1} \\ = 3[/tex]
[tex]2)1,25 - 0,5 \times \frac{1}{4} \\ = \frac{125}{100} - \frac{5}{10} \times \frac{1}{4} \\ = \frac{125}{100} - \frac{5}{40} \\ = \frac{250}{200} - \frac{25}{200} \\ = \frac{225}{200} \\ = \frac{9}{8} \\ = 1 \frac{1}{8} [/tex]
[tex]3) \frac{1}{4} + 1,5 \div 0,25 \\ = \frac{1}{4} + \frac{15}{10} \div \frac{25}{100} \\ = \frac{1}{4} + \frac{15}{10} \times \frac{100}{25} \\ = \frac{1}{4} + \frac{1500}{250} \\ = \frac{125}{500} + \frac{3000}{500} \\ = \frac{3.125}{500} \\ = \frac{25}{4} \\ = 6 \frac{1}{4} [/tex]
[tex]4)2 \frac{4}{5} \times \frac{1}{8} - 0,15 \\ = \frac{14}{5} \times \frac{1}{8} - \frac{15}{100} \\ = \frac{14}{40} - \frac{15}{100} \\ = \frac{70}{200} - \frac{30}{200} \\ = \frac{40}{200} \\ = \frac{1}{5} [/tex]
[tex]5)14,1 \div (1 \frac{3}{5} + 75\%) \\ = \frac{14}{10} \div ( \frac{8}{5} + \frac{75}{100}) \\ = \frac{14}{10} \div ( \frac{160}{100} + \frac{75}{100} ) \\ = \frac{14}{100} \div \frac{85}{100} \\ = \frac{14}{100} \times \frac{100}{85} \\ = \frac{1400}{8500} \\ = \frac{28}{170} \\ = \frac{14}{85} [/tex]
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