`(3x+2)/3 <= (x-4)/7`
`<=>7(3x+2) <= 3(x-4)`
`<=>21x+14 <= 3x-12`
`<=> 18x <=-26`
`<=>x <= -13/9`
Vậy `x<=-13/9`.
`(3x+2)/3 <= (x-4)/7`
`<=>7(3x+2) <= 3(x-4)`
`<=>21x+14 <= 3x-12`
`<=> 18x <=-26`
`<=>x <= -13/9`
Vậy `x<=-13/9`.
\(\dfrac{3x+2}{3}\le\dfrac{x-4}{7}\) help em vs mn ơi
\(\dfrac{x+1}{x-3}+\dfrac{x-1}{x+3}=\dfrac{x+6}{x^2-9}\) help em vs mn ơi
\(\dfrac{2x-5}{3}=\dfrac{x+2}{2}\) help em vs mn ơi
\(\dfrac{3-3x}{5}\)=\(\dfrac{x-1}{2}\) help em vs mn
\(\dfrac{3}{5}x^3y\left(10xy^3-\dfrac{5}{3}y^2+\dfrac{5}{6}xy\right)\) help em vs mn ơi
\(\dfrac{x+1}{2x+6}+\dfrac{2x+3}{x^2+3x}\)
MN help mình với
Giải bất phương trình sau
a)\(\dfrac{2-x}{3}\)\(-x-2\le\dfrac{x-17}{2}\)
b) \(\dfrac{2x+1}{3}-\dfrac{x-4}{4}\le\dfrac{3x+1}{6}-\dfrac{x-4}{12}\)
\(\dfrac{x}{x+4}+\dfrac{56-x^2}{x^2}=\dfrac{5}{x-4}\) help em vs mn oi
\(A=\left(\dfrac{x-1}{x^2-2x}+\dfrac{x+1}{x^2+2x}-\dfrac{4}{x^3-4x}\right)\div\dfrac{2x+4}{x^2-3x}\)
Tìm giátrị x để A \(\le\)0