Question

tìm x

a, \(\dfrac{1}{2}\) + x =\(\dfrac{5}{2}\)                  b, \(\dfrac{3}{4}\) - x =\(\dfrac{2}{3}\)                    c, x : \(\dfrac{4}{5}\)  = \(\dfrac{6}{7}\) 

 làm hộ mình với 

Answer 1

a) x=4/2

b) x=1/12

c) 24/35

Answer 2

a,\(\dfrac{1}{2}+x=\dfrac{5}{2}\)

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

\(\Rightarrow x=2\)

b,\(\dfrac{3}{4}-x=\dfrac{2}{3}\)

\(x=\dfrac{3}{4}-\dfrac{2}{3}\)

\(\Rightarrow x=\dfrac{1}{12}\)

c,\(x:\dfrac{4}{5}=\dfrac{6}{7}\)

\(x=\dfrac{6}{7}.\dfrac{4}{5}\)

\(\Rightarrow\dfrac{24}{35}\)

Answer 3

a)1/2+x=5/2                                          b)3/4-x=2/3

    x=5/2-1/2=4/2=2                                  x=3/4-2/3=1/12

c)x:4/5=6/7

   x=6/7.4/5=24/35

Answer 4

a) x=4/2

b) x=1/12

c) 24/35

Answer 5

a) x = 2
b) x = 1/12
c) x = 24/35