Mohon Maaf kalo salah:
Jawaban:
[tex]1) \frac{2}{3} + \frac{3}{4} - \frac{1}{6} \\ = \frac{8}{12} + \frac{9}{12} - \frac{2}{12} \\ = \frac{17}{12} - \frac{2}{12} \\ = \frac{15}{12} \\ = \frac{5}{4} \\ = 1 \frac{1}{4} [/tex]
[tex]2) \frac{9}{10} - \frac{2}{5} + \frac{3}{4} \\ = \frac{18}{20} - \frac{8}{20} + \frac{15}{20} \\ = \frac{18}{20} - \frac{23}{20} \\ = - \frac{5}{20} \\ = - \frac{1}{4} [/tex]
[tex]3)1 \frac{3}{5} + 2 \frac{1}{6} - \frac{1}{2} \\ = \frac{8}{5} + \frac{13}{6} - \frac{1}{2} \\ = \frac{48}{30} + \frac{65}{30} - \frac{15}{30} \\ = \frac{113}{30} - \frac{15}{30} \\ = \frac{98}{30} \\ = \frac{49}{15} \\ = 3 \frac{4}{15} [/tex]
[tex]4)2 \frac{2}{3} + 4 \frac{3}{5} - \frac{4}{15} \\ = \frac{8}{3} + \frac{23}{5} - \frac{4}{15} \\ = \frac{40}{15} + \frac{69}{15} - \frac{4}{15} \\ = \frac{109}{15} - \frac{4}{15} \\ = \frac{105}{15} \\ = \frac{21}{3} \\ = 7 [/tex]
[tex]5)8 \frac{8}{9} - 2\frac{1}{6} - \frac{1}{2} \\ = \frac{80}{9} - \frac{13}{6} - \frac{1}{2} \\ = \frac{480}{54} - \frac{117}{54} - \frac{27}{54} \\ = \frac{336}{54} \\ = \frac{56}{9} \\ = 6 \frac{2}{9} [/tex]
[tex]6)12 \frac{5}{6} - 3 \frac{5}{12} - 1 \frac{1}{2} \\ = \frac{77}{6} - \frac{41}{12} - \frac{3}{2} \\ = \frac{154}{12} - \frac{41}{12} - \frac{18}{12} \\ = \frac{95}{12} \\ = 7 \frac{11}{12} [/tex]
[tex]7)15 \frac{9}{11} + 2 \frac{1}{22} - 1 \frac{1}{2} \\ = \frac{174}{11} + \frac{45}{22} - \frac{3}{2} \\ = \frac{348}{22} + \frac{45}{22} - \frac{33}{22} \\ = \frac{393}{22} - \frac{33}{22} \\ = \frac{360}{22} \\ = \frac{180}{11} \\ = 16 \frac{4}{11} [/tex]
[tex]8)20 \frac{2}{3} + 5 \frac{3}{5} - 2 \frac{2}{15} \\ = \frac{62}{3} + \frac{28}{5} - \frac{32}{15} \\ = \frac{310}{15} + \frac{84}{15} - \frac{32}{15} \\ = \frac{394}{15} - \frac{32}{15} \\ = \frac{362}{15} \\ =24 \frac{2}{15} [/tex]
[tex]9)24 \frac{8}{9} - 12 \frac{1}{6} - 3 \frac{1}{2} \\ = \frac{224}{9} - \frac{73}{6} - \frac{7}{2} \\ = \frac{1.344}{54} - \frac{657}{54} - \frac{189}{54} \\ = \frac{498}{5} \\ = 99 \frac{3}{5} [/tex]
[tex]10)50 \frac{5}{6} - 5 \frac{5}{12} - 4 \frac{1}{8} \\ = \frac{305}{6} - \frac{65}{12} - \frac{33}{8} \\ = \frac{1.220}{24} - \frac{130}{24} - \frac{99}{24} \\ = \frac{991}{24} \\ = 41 \frac{7}{24} [/tex]
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