\(25\%+\frac{2}{5}\le x\%\le1-0,3\)
\(\Rightarrow\frac{13}{20}\le\frac{x}{100}\le\frac{7}{10}\)
\(\Rightarrow\frac{13}{20}.100\le x\le\frac{7}{10}.100\)
\(\Rightarrow65\le x\le70\)
\(\Rightarrow x\in\left\{65;66;67;68;69;70\right\}\)
GIÚP mình với!!!!! Đề bài đây: \(-2\le\frac{x}{2}\le1\). Tổng các số nguyên x thỏa mãn là bao nhiêu????
Cho \(0\le a\le b\le c\le1\) CMR : \(\frac{a}{b+c}+\frac{b}{a+c}+\frac{c}{a+b}\le2\)
Tìm x
a) \(\frac{x}{3}\)- \(\frac{10}{21}\)=\(\frac{-1}{7}\)
b) X - 25% = 1/2
c) -5/6 + 8/3 + -29/6 \(\le\)x \(\le\)-1/2 + 2 +5/2
Cho ba số dương \(0\le a\le b\le c\le1\)chứng minh rằng: \(\frac{a}{bc+1}+\frac{b}{ac+1}+\frac{c}{ab+1}\le2\)
1) \(\frac{24}{-12}=\frac{x}{5}=\frac{-y}{3}\)Tìm x và y
2) \(\frac{1}{3}+\frac{-2}{5}+\frac{1}{6}+\frac{-5}{25}\le\frac{x}{10}< \frac{-3}{4}+\frac{4}{14}+\frac{-2}{8}+\frac{-3}{5}+\frac{5}{7}\)Tìm x
3) \(\frac{8.x+18}{2.x+6}\)Tìm x
Bài 1 ; tìm X thuộc Z
a, 16 - x = 5 b, \(\frac{x}{-4}=\frac{18}{12}\)
c,\(\frac{-15}{3}\le x\le\frac{25}{7}\) d,(2x - 8 ) - (x2 + 3 ) = 0
Tìm x
\(\frac{-5}{6}+\frac{8}{3}+\frac{-29}{6}\le x\le\frac{-1}{2}+2+\frac{5}{2}\)
Tìm x:
\(-\frac{5}{17}+\frac{3}{17}\le\frac{x}{17}\le\frac{13}{17}+-\frac{11}{17}\)
\(\frac{5}{6}+-\frac{7}{8}\le\frac{x}{24}\le-\frac{5}{12}+\frac{5}{8}\)
\(\frac{8}{17}+\frac{5}{17}< \frac{x}{17}< \frac{6}{17}+\frac{9}{17}\)
\(-\frac{6}{7}+\frac{3}{35}< \frac{x}{35}\le-\frac{2}{5}+\frac{3}{7}\)
ai nhanh và đúng mk tick
Tìm x biết:
\(\frac{-5}{6}+\frac{8}{3}+\frac{29}{-6}\le x\le\frac{-1}{2}+2+\frac{5}{2}\)
