Question

1. tìm x biết

a. \(1\dfrac{2}{3}\)x-\(\dfrac{1}{4}\)=\(\dfrac{5}{6}\)

b. \(\dfrac{1}{5}\)+x=\(\dfrac{-2}{3}\)

c. |x-\(\dfrac{1}{2}\)|-\(\sqrt{\dfrac{1}{9}}\)=\(\sqrt{\dfrac{1}{4}}\)

d. \(\sqrt{x}\)=9

Answer 1

Hay quá, mk cũng đang tìm câu này nè

Answer 2

a) ⇒ \(\dfrac{5}{3}x\) \(=\) \(\dfrac{5}{6}+\dfrac{1}{4}\)

⇒ \(\dfrac{5}{3}x=\dfrac{13}{12}\)

⇒ \(x=\dfrac{13}{12}:\dfrac{5}{3}\)

⇒\(x=\dfrac{13}{20}\)

Answer 3

d) ⇒ \(\sqrt{x}\)\(=\sqrt{3}\)

⇒ \(x=3\)

Answer 4

b) ⇒ \(x=\dfrac{-2}{3}\)\(-\dfrac{1}{5}\)

⇒ \(x=\dfrac{-13}{15}\)

Answer 5

Answer 6

a: =>5/3x=5/6+1/4=10/12+3/12=13/12

=>x=13/12:5/3=13/12*3/5=39/60=13/20

b: x=-2/3-1/5=-10/15-3/15=-13/15

c: =>|x-1/2|=1/2+1/3=5/6

=>x-1/2=5/6 hoặc x-1/2=-5/6

=>x=4/3 hoặc x=-5/6+1/2=-5/6+3/6=-2/6=-1/3

d: căn x=9

=>căn x=căn 81

=>x=81