Question

Tìm x biết:

\(a,\dfrac{4}{5}+x=\dfrac{2}{3}\)

\(b,\dfrac{-5}{6}-x=\dfrac{2}{3}\)

\(c,\dfrac{1}{2}x+\dfrac{3}{4}=\dfrac{-3}{10}\)

\(d,\dfrac{x}{3}-\dfrac{1}{2}=\dfrac{1}{5}\)

\(e,\dfrac{x+3}{15}=\dfrac{1}{3}\)

\(h,x+30\%x=-1,3\)

\(k,3\dfrac{1}{3}x+16\dfrac{1}{4}=13,25\)

\(m,\dfrac{x-6}{2}=\dfrac{50}{x-6}\)

\(n,x-13,4=24,5-6,7.5,2\)

\(p,15,7x+3,6x=-96,5\)

\(q,2,5x-11,6=-59,1\)

 

Answer 1

a)4/5+x=2/3

x=2/3-4/5

x=-2/15

b)-5/6-x=2/3

x=-5/6-2/3

x=-3/2

c)1/2x+3/4=-3/10

1/2x=-3/10-3/4

1/2x=-21/20

x=-21/20:1/2

x=-21/10

d)x/3-1/2=1/5

x/3=1/5+1/2

x/3=7/10

10x/30=21/30

10x=21

x=21:10

x=21/10