2015 Yachtsman's Guide to the Bahamas

2015 Yachtsman's Guide to the Bahamas

Matematika Bibi mempunyai persediaan gula 2 2/5 kg. Ia membuat kue memerlukan gula 2 2/3 kg. Ia membeli gula 1 1/2 kg. Gula yang dimiliki bibi ada?
a.19/30
b.9/30
c.1 23/30
d.1 7/30 ​

Bibi mempunyai persediaan gula 2 2/5 kg. Ia membuat kue memerlukan gula 2 2/3 kg. Ia membeli gula 1 1/2 kg. Gula yang dimiliki bibi ada?
a.19/30
b.9/30
c.1 23/30
d.1 7/30 ​

Penjelasan dengan langkah-langkah:

[tex] = 2 \frac{2}{5} - 2 \frac{2}{3} + 1 \frac{1}{2 } \\ = \frac{12}{5} - \frac{8}{3} + \frac{3}{2} \: \: \: \: \\ = \frac{72}{30} - \frac{80}{30} + \frac{45 }{30} \\ = - \frac{8}{30} + \frac{45}{30} = \frac{37}{30 } \\ = 1 \frac{7}{30} [/tex]

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PENYELESAIAN:

[tex] \tt \to2 \frac{2}{5} - 2 \frac{2}{3} + 1 \frac{1}{2} \\ \tt= \frac{12}{5} - \frac{8}{3} + \frac{3}{2} \: \: \: \: \\ \tt = \frac{72}{30} - \frac{80}{30} + \frac{45}{30} \\ \tt= \frac{72 - 80 + 45}{30} \: \: \\ \tt = \frac{37}{30} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \bf = \blue{ 1 \frac{7}{30} \:(d.) } \: \: \: \: \: \: \: \: \: \: [/tex]