a) \(\left|x\right|=x\\ \left|-\dfrac{4}{7}\right|=\dfrac{4}{7}\)
a) \(\left|x\right|=x\\ \left|-\dfrac{4}{7}\right|=\dfrac{4}{7}\)
tìm x,biết
a)0,(31)+x=0,3(7) b)0,(4).x=\(\dfrac{5}{6}\)
tìm x biết
a)1/6+x=5/12
b3/4+1/4x=-1/2
c)7 mũ 2x +7 mũ 2x +3=344
Tìm x biếta) x÷0,(7)=0,(32):2,(4)
b)0,(17):2,(3)=x:0,(3)
tìm x, biết
a) 7/x-1=x+1/9
b) x-1/x+2 = x-2/x+3
Tìm x biết
a, 3/7 - x = 1/2x - 3
b, 5x - 2/3 = 5/3 - 2x
tìm x, biết
a,/x-3/+/x+2/=4
b,/2x-4/+/6x-18/=21
Tìm x, biết
a)\(\dfrac{1}{2}\)x\(x\)-\(\dfrac{7}{3}\)=\(\dfrac{-5}{6}\)+\(\dfrac{3}{4}\)x\(x\)
b)\(\dfrac{4}{5}\)x\(x\)-\(\dfrac{6}{5}\)=\(\dfrac{1}{2}\)+\(\dfrac{3}{2}\)x\(x\)
c)\(\dfrac{2}{5}\)x(3x\(x\)+\(\dfrac{3}{4}\))=\(1\dfrac{1}{5}\)-\(\dfrac{1}{3}\)x\(x\)
d)2x(3x\(x \)+\(\dfrac{3}{4}\))+\(\dfrac{4}{5}\)=\(\dfrac{1}{2}\)-2x\(x\)
bai 5: tìm so nguyên x biết
a) (x-2)(x+5) <0
b) (5-x)(x+5) <0
c) (-3x-18)(7-x) >0
tìm x biết
a) \(\dfrac{x}{2}\)=\(\dfrac{y}{5}\) và x+y=-14
b)\(\dfrac{x}{7}=\dfrac{y}{5}\) và x-y=8