Answer:
7. 2 ⅝
8. ⅘
9. - 9/16
10. 13.84
11. -1
12. 9
Step-by-step explanation:
7.
[tex]10 - 7 \: \frac{3}{8} \\ = 9 \: \frac{8}{8} - 7 \: \frac{3}{8} \\ = 2 \: \frac{5}{8} [/tex]
8.
[tex] \frac{5}{10} + \frac{6}{20} \\ = \frac{10}{20} + \frac{6}{20} \\ = \frac{16}{20} \\ = \frac{4}{5} [/tex]
9.
[tex] - \frac{3}{4} \times \frac{15}{20} \\ = - \frac{45}{80} \\ = - \frac{9}{16} [/tex]
10.
[tex]41.52 \div 3 \\ = 13.84[/tex]
11.
[tex] \frac{4}{20} \div - \frac{1}{5} \\ = \frac{4}{20} \times - \frac{5}{1} \\ = \frac{4}{4} \times - \frac{1}{1} \\ = - \frac{4}{4} \\ = - 1[/tex]
12.
[tex]3 \div \frac{4}{12} \\ = 3 \times \frac{12}{4} \\ = \frac{36}{4} \\ = 9[/tex]
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