Question

buna
vreau sa ma ajutati la ex 1 a)0,75×4,2-0,2:5
b)(2-3/5×25/27):10/27​

Answer 1

Explicație pas cu pas:

$0.75 \times 4.2 - 0.2 \div 5 = 3.15 - 0.04 = 3.11$

$(2-\frac{3}{5}\times\frac{25}{27}) \div\frac{10}{27} = (2 - \frac{5}{9}) \times \frac{27}{10} = \frac{18 - 5}{9} \times \frac{27}{10} = \frac{13 \times 27}{9 \times 10} = \frac{39}{10}$