Question

Tìm x:\(\frac{4}{5}+\frac{1}{5}:x=\frac{1}{2}\)

Answer 1

\(\frac{4}{5}+\frac{1}{5}\div x=\frac{1}{2}\)

\(\frac{1}{5}\div x=\frac{1}{2}-\frac{4}{5}\)

\(\frac{1}{5}\div x=\frac{5}{10}-\frac{8}{10}\)

\(\frac{1}{5}\div x=-\frac{3}{10}\)

\(x=\frac{1}{5}\div\left(-\frac{3}{10}\right)\)

\(x=\frac{1}{5}\times\left(-\frac{10}{3}\right)\)

\(x=-\frac{10}{15}=-\frac{2}{3}\)

Answer 2

\(\frac{4}{5}+\frac{1}{5}:x=\frac{1}{2}\)

=>\(\frac{1}{5}:x=\frac{1}{2}-\frac{4}{5}\)

=>\(\frac{1}{5}:x=-\frac{3}{10}\)

=>\(x=\frac{1}{5}:-\frac{3}{10}\)

=>\(x=-\frac{2}{3}\)

Answer 3

đề bài sai rồi

Answer 4

\(\frac{4}{5}+\frac{1}{5}:x=\frac{1}{2}\)

              1/5:x  =   1/2 - 4/5

               1/5:x =         -3

                    x  =   1/5: (-3)

                    x  =       -1/15

Answer 5

1
5 ÷x=
1
2 −
4
5 

1
5 ÷x=
5
10 −
8
10 

1
5 ÷x=−
3
10