Question

Calc. (3 intregi 8/9-1,5)÷(3 intregi 1/2+0,8) + 2, (4)

Answer 1

$(3 \frac{8}{9} - 1.5) \div (3 \frac{1}{2} + 0.8) + 2.(4)$

$= ( \frac{3 \times 9 + 8}{9} - \frac{15}{10} ) \div ( \frac{3 \times 2 + 1}{2} + \frac{8}{10} ) + \frac{24 - 2}{9}$

$= ( \frac{35}{9} - \frac{3}{2} ) \div ( \frac{7}{2} + \frac{8}{10} ) + \frac{22}{9}$

$= ( \frac{70}{18} - \frac{27}{18} ) \div ( \frac{35}{10} + \frac{8}{10} ) + \frac{22}{9}$

$= \frac{70 - 27}{18} \div \frac{35 + 8}{10} + \frac{22}{9}$

$= \frac{43}{18} \div \frac{43}{10} + \frac{22}{9}$

$= \frac{43}{18} \times \frac{10}{43} + \frac{22}{9}$

$= \frac{10}{18} + \frac{22}{9}$

$= \frac{10}{18} + \frac{44}{18}$

$= \frac{10 + 44}{18}$

$= \frac{54}{18}$

$= 3$