Question

9/10-4/5=
11/12-5/8=
3/2-1/4=
4/5-1/2=

Answer 1

bom dia !!!

$\frac{9}{10} - \frac{4}{5} \\ \\ \frac{9 - 8}{10} \\ \\ = \frac{1}{10} \\ \\ \\ \frac{11}{12} - \frac{5}{8} \\ \\ \frac{22 - 15}{24 } \\ \\ = \frac{7}{24} \\ \\ \\ \frac{3}{2} - \frac{1}{4} \\ \\ \frac{6 - 1}{4} \\ \\ = \frac{5}{4} \\ \\ \\ \frac{4}{5} - \frac{1}{2} \\ \\ \frac{8 - 5}{10} \\ \\ = \frac{3}{10}$

espero que eu tenha conseguido te ajudar...