Question

Tìm x biết :

\(\frac{2}{5}+x+\frac{1}{2}=\frac{3}{4}\)

Answer 1

2/5 + x + 1/2 = 3/4

         2/5 + x = 3/4 - 1/2

          2/5 + x = 1/4

                   x = 1/4 - 2/5 

                    x = -3/20

Answer 2

\(\frac{2}{5}+x=\frac{3}{4}-\frac{1}{2}\)

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

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

\(x=-\frac{3}{20}\)

Bài này b tự quy đồng giùm mình

Answer 3

x=-0,15 nha bạn!Nhớ tk mình nhé

Answer 4

\(\frac{2}{5}\)\(+x+\)\(\frac{1}{2}\)\(=\frac{3}{4}\) 

\(\frac{2}{5}\)\(+x=\frac{3}{4}\)\(-\frac{1}{2}\)

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

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

\(x=-\frac{3}{20}\)

Answer 5

x=-0,15

Chắc chắn 100% luôn nha!

Answer 6

\(\frac{2}{5}+x+\frac{1}{2}=\frac{3}{4}\)

            \(\frac{2}{5}+x=\frac{3}{4}-\frac{1}{2}\)

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

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

                            \(x=-\frac{3}{20}\)

ai k mik mik k lại

Answer 7

2/5+x+1/2=3/4

2/5+x=3/4-1/2

2/5+x=1/4

x=1/4-2/5

x=-3/20