Question

Ajutați-mă va rog punctul g)!!!

Answer 1

$g)\quad 2,0(5) -1\dfrac{3}{8} =\\ \\ = 2\dfrac{5}{90} - 1\dfrac{3}{8}\\ \\ =2\dfrac{1}{18}-1\dfrac{3}{8}\\ \\ =\dfrac{2\cdot 18+1}{18}-\dfrac{1\cdot 8+3}{8}\\ \\ = \dfrac{37}{18}-\dfrac{11}{8}\\ \\ =\dfrac{37\cdot 4}{72}-\dfrac{11\cdot 9}{72}\\ \\=\dfrac{148-99}{72}\\ \\ = \dfrac{49}{72}$