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Step-by-step explanation:
a)
[tex]2 \times \frac{1}{5} \times \frac{11}{5} [/tex]
[tex]4 \times \frac{3}{4} = \frac{19}{4} [/tex]
[tex] \frac{11}{5} + \frac{19}{4} \\ \\ [/tex]
LCM of 4,5is 20
[tex] \frac{11 \times 4}{5 \times 4} = \frac{44}{20} [/tex]
[tex] \frac{19 \times 5}{4 \times 5} = \frac{95}{20} [/tex]
[tex] \frac{44 + 95}{20} = \frac{139}{20} [/tex]
first answer
b)
[tex]4 \times \frac{4}{5} - 3 \times \frac{7}{9} [/tex]
[tex] \frac{24}{5} - \frac{44}{9} [/tex]
LCM OF 5,9 IS 45
[tex] \frac{24 \times 9}{5 \times 9 } = \frac{216}{45} [/tex]
[tex] \frac{44 \times 5}{9 \times 5} = \frac{220}{45} [/tex]
[tex] \frac{216 - 220}{45} = \frac{ - 4}{45} [/tex]
here are the answers