Question

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Answer 1

$(7frac{4}{19}-2frac{8}{19})+(8-4frac{12}{19})=(6frac{23}{19}-2frac{8}{19})+(7frac{19}{19}-2frac{8}{19})=\\=4frac{15}{19}+5frac{11}{19}=9frac{26}{19}=10frac{7}{19}\\\7frac{4}{19}=6+1+frac{4}{19}=6+frac{19}{19}+frac{4}{19}=6+frac{19+4}{19}=6frac{23}{19}\\8=7+1=7+frac{19}{19}\\9frac{26}{19}=9+frac{19+7}{19}=9+frac{19}{19}+frac{7}{19}=9+1+frac{7}{19}=10frac{7}{19}$