Jawaban:
1. -1
2. 5.04
3. 6
4. -1/2
Penjelasan dengan langkah-langkah:
1.
[tex]0.5 \times - 2 = \frac{5}{10} \times (- 2)[/tex]
[tex] = \frac{5 \times ( - 2)}{10} = \frac{ - 10}{10} [/tex]
[tex] = - 1[/tex]
2.
[tex] - 3.6 \times ( - 1.4)[/tex]
[tex] - \frac{36}{10} \times ( - \frac {14}{10} )[/tex]
[tex] = \frac{ - 36 \times ( - 14)}{10 \times 10} = \frac{504}{100} [/tex]
[tex] = 5.04[/tex]
3.
[tex] - \frac{2}{3} \times ( - 9)[/tex]
[tex] = \frac{ - 2 \times ( - 9)}{3} = \frac{18}{3} [/tex]
[tex] = 6[/tex]
4.
[tex] - \frac{4}{7} \times \frac{7}{8} [/tex]
[tex] \frac{ - 4 \times 7}{7 \times 8} [/tex]
pembilang dan penyebut sama² dibagi 7
[tex] = \frac{ - 4}{8} [/tex]
[tex] = - \frac{1}{2} [/tex]
