Tìm số nguyên x biết :
a) \(\frac{3}{x-5}\) = \(\frac{-4}{x+2}\)
b) \(\frac{-35}{7}\)< x\(\le\) -1
c) \(\frac{-30}{5}\)<x< \(\frac{-45}{9}\)
d) \(\frac{-x}{4}\)=\(\frac{-9}{x}\)
Tìm số nguyên x biết: a) \(-4\frac{3}{5}.2\frac{4}{23}\le x\le-2\frac{3}{5}:1\frac{6}{15}\)
b) \(-4\frac{1}{3}.\left(\frac{1}{2}-\frac{1}{6}\right)\le x\le-\frac{2}{3}\left(\frac{1}{3}-\frac{1}{2}-\frac{3}{4}\right)\)
Tìm số nguyên x
a) \(\frac{1}{3}+\frac{-2}{5}+\frac{1}{6}+\frac{-1}{5}\le x< \frac{-3}{4}+\frac{2}{7}+\frac{-1}{4}+\frac{3}{5}+\frac{5}{7}\)
b)\(\frac{5}{17}+\frac{-9}{4}+\frac{-26}{31}+\frac{12}{17}+\frac{-11}{31}< \frac{x}{9}\le\frac{-3}{7}+\frac{7}{15}+\frac{4}{-7}+\frac{8}{15}\)
\(a)\frac{1}{3}+\frac{-2}{5}+\frac{1}{6}+\frac{-1}{5}\le x< \frac{-3}{4}+\frac{2}{7}+\frac{-1}{4}+\frac{3}{5}+\frac{5}{7}\)
\(\Rightarrow\frac{1}{3}+\frac{1}{6}+\frac{-2}{5}+\frac{-1}{5}\le x< \frac{-3}{4}+\frac{-1}{4}+\frac{2}{7}+\frac{5}{7}+\frac{3}{5}\)
\(\Rightarrow\frac{2}{6}+\frac{1}{6}+\frac{-3}{5}\le x< -1+1+\frac{3}{5}\)
\(\Rightarrow\frac{1}{2}+\frac{-3}{5}\le x< \frac{3}{5}\)
\(\Rightarrow\frac{-1}{10}\le x< \frac{6}{10}\)
\(\Rightarrow-1\le x< 6\)
\(\Rightarrow x\in\left\{-1;0;1;2;3;4;5\right\}\)
Bài b tương tự
bạn ơi bạn giải câu b được ko. mk ko biết làm câu b
Tìm số nguyên x biết:
a) \(-4\frac{3}{5}.2\frac{4}{23}\le x\le-2\frac{3}{5}:1\frac{6}{15}\)
b) \(-4\frac{1}{3}.\left(\frac{1}{2}-\frac{1}{6}\right)\le x\le-\frac{2}{3}\left(\frac{1}{3}-\frac{1}{2}-\frac{3}{4}\right)\)
a) \(-4\frac{3}{5}\cdot2\frac{4}{23}\le x\le-2\frac{3}{15}:1\frac{6}{15}\)
=> \(-\frac{23}{5}\cdot\frac{50}{23}\le x\le\frac{-33}{15}:\frac{21}{15}\)
=> \(-10\le x\le\frac{-11}{7}\)
=> \(x\in\left\{-10;-9,-8,-7,-6,-5,-4,-3,-2,-1\right\}\)
Bài 8: Tìm số nguyên x biết
a) \(\left(\frac{-12}{27}+\frac{2}{3}\right)+\frac{-2}{9}\le x\le\left(\frac{11}{7}+\frac{2}{5}\right)+\frac{7}{5}+\frac{3}{7}\) b\(\frac{-x}{2}+\frac{2x}{3}+\frac{x+1}{4}+\frac{2x+1}{6}=\frac{8}{3}\)
c)\(\frac{3}{2x+1}+\frac{10}{4x+2}-\frac{6}{6x+3}=\frac{12}{26}\)
Tìm số nguyên x, biết rằng: \(\frac{3}{7}.15\frac{1}{3}+\frac{3}{7}.5\frac{2}{5}\le x\le\left(3\frac{1}{2}:7-6\frac{1}{2}\right).\left(-2\frac{1}{3}\right)\)
\(\frac{3}{7}\cdot15\cdot\frac{1}{3}+\frac{3}{7}\cdot5\cdot\frac{2}{5}\le x\le\left(3\frac{1}{2}:7-6\frac{1}{2}\right)\cdot\left(-2\frac{1}{3}\right)\)
\(\Leftrightarrow\frac{15}{7}+\frac{6}{7}\le x\le-6\cdot\frac{-5}{3}\)
\(\Leftrightarrow3\le x\le10\)
Mà \(x\in Z\)
\(\Rightarrow x\in\left\{4;5;6;7;8;9\right\}\)
bn Quân sai rồi, hỗn số \(15\frac{1}{3}\)chứ có phải \(15.\frac{1}{3}\)đâu???
\(\frac{3}{7}\cdot15\frac{1}{3}+\frac{3}{7}\cdot5\frac{2}{5}\le x\le\left(3\frac{1}{2}:7-6\frac{1}{2}\right)\cdot\left(-2\frac{1}{3}\right)\)
\(\Rightarrow\frac{3}{7}\left(15\frac{1}{3}+5\frac{2}{5}\right)\le x\le\left(\frac{7}{2}:7-\frac{13}{2}\right)\cdot\left(-\frac{7}{3}\right)\)
\(\Rightarrow\frac{3}{7}\left(\frac{46}{3}+\frac{27}{5}\right)\le x\le\left(\frac{7}{14}-\frac{13}{2}\right)\cdot\left(-\frac{7}{3}\right)\)
\(\Rightarrow\frac{311}{35}\le x\le14\)
\(\Rightarrow8,8...\le x\le14\)
Đến đây là tìm x :))
tìm tất cả các số nguyên x biết
\(\frac{-5}{7}+1+\frac{30}{-7}\le x\le\frac{-1}{6}+\frac{1}{3}+\frac{5}{6}\)
ko có ai chỉ mình làm à
Tìm số nguyên x biết :
a) \(\frac{3}{x-5}\) = \(\frac{-4}{x+2}\)
b) \(\frac{-x}{4}\) = \(\frac{-9}{x}\)
c) \(\frac{-35}{7}\) < x \(\le\) -1
d) \(\frac{-30}{5}\) < x < \(\frac{-45}{9}\)
Tìm số nguyên x biết
a) \(\frac{3}{x-5}\) = \(\frac{-4}{x+2}\)
b) \(\frac{-x}{4}\) = \(\frac{-9}{x}\)
c) \(\frac{-35}{7}\) < x\(\le\) -1
d) \(\frac{-30}{5}\)<x<\(\frac{-45}{9}\)
Hu hu các bạn ơi giúp mk!
A,b nhân chéo lên thôi ; còn c d thì chọn mấy cái số nguyên là tậ của x
Tìm số nguyên x biết :
a) \(\frac{3}{x-5}\) = \(\frac{-4}{x+2}\)
b) \(\frac{-x}{4}\) = \(\frac{-9}{x}\)
c) \(\frac{-35}{7}\) < x \(\le\) -1
d) \(\frac{-30}{5}\) < x < \(\frac{-45}{9}\)