Question

Các bạn giúp mình bài này với ạ
1 phần 3 + 1 phần 2 : x = -4

5 phần 7 + 2 phần 3 . x = 3 phần 11

-22 phần 15 . x + 1 phần 3 = | -2 phần 3 + 1 phần 5 |

Answer 1

Ta có:

\(\frac{5}{7}+\frac{2}{3}.x=\frac{3}{11}\)

\(\Rightarrow\frac{2}{3}.x=\frac{3}{11}-\frac{5}{7}\)

\(\Rightarrow\frac{2}{3}.x=-\frac{34}{77}\)

\(\Rightarrow x=-\frac{34}{77}:\frac{2}{3}\)

\(\Rightarrow x=-\frac{34}{77}.\frac{3}{2}\)

\(\Rightarrow x=-\frac{13}{11}\)

Answer 2

Ta có:

\(-\frac{22}{15}.x+\frac{1}{3}=\left|-\frac{2}{3}+\frac{1}{5}\right|\)

\(\Rightarrow-\frac{22}{15}.x+\frac{1}{3}=\left|-\frac{7}{15}\right|\)

\(\Rightarrow-\frac{22}{15}.x+\frac{1}{3}=\frac{7}{15}\)

\(\Rightarrow-\frac{22}{15}.x=\frac{7}{15}-\frac{1}{3}\)

\(\Rightarrow-\frac{22}{15}.x=\frac{2}{15}\)

\(\Rightarrow x=\frac{2}{15}:-\frac{22}{15}\)

\(\Rightarrow x=\frac{2}{15}.-\frac{15}{22}\)

\(\Rightarrow x=-\frac{1}{11}\)

Answer 3

Ta có :

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

\(\Rightarrow\frac{1}{2}:x=-4-\frac{1}{3}\)

\(\Rightarrow\frac{1}{2}:x=-\frac{13}{3}\)

\(\Rightarrow x=\frac{1}{2}:-\frac{13}{3}\)

\(\Rightarrow x=-\frac{3}{26}\)