ĐỌC TIẾP NHÉ

a: x=11/10-4/5=3/10

b: =3/7-2/7=1/7

a. x + 4/5 = 11/10 

   x           = 11/10 - 4/5

   x           = 3/10

b. 3/5 x 5/7 - 2/7

= 3/7 - 2/7

= 1/7

ĐỌC TIẾP CHO BÍT NHÉ

\(a,\dfrac{1}{2}\times\dfrac{1}{3}-\dfrac{1}{8}=\dfrac{1}{6}-\dfrac{1}{8}=\dfrac{4}{24}-\dfrac{3}{24}=\dfrac{1}{24}\\ b,\dfrac{5}{2}:\dfrac{1}{4}-\dfrac{1}{8}=\dfrac{5}{2}\times4-\dfrac{1}{8}=10-\dfrac{1}{8}=\dfrac{80}{8}-\dfrac{1}{8}=\dfrac{79}{8}\)

a) 1/6- 1/8

= 1/24

b) 5/2 x 4/1-1/8

= 20/2 - 1/8

= 10-1/8

= 79/8

ĐỌC TIẾP Ý

a) \(x+\dfrac{4}{5}=\dfrac{45}{5}-\left(\dfrac{3}{7}+\dfrac{3}{5}\right)\)

   \(x+\dfrac{4}{5}=\dfrac{45}{5}-\dfrac{36}{35}\)

  \(x+\dfrac{4}{5}=\dfrac{279}{35}\)

  \(x=\dfrac{279}{35}-\dfrac{4}{5}\)

  \(x=\dfrac{251}{35}\)

b) \(\dfrac{5}{8}\times x=\dfrac{4}{5}\)

            \(x=\dfrac{4}{5}\div\dfrac{5}{8}\)

            \(x=\dfrac{32}{25}\)

a) x + 4/5 = 45/5 - (3/7 + 3/5)
    x + 4/5 = 45/5 - 36/35

    x + 4/5 = 279/35

           x   = 279/35 - 4/5

           x   = 251/35

vậy x =...

b) 5/8 x X = 4/5 

             X = 5/8 : 4/5

             X = 32/25

vậy x =...

a: =(3/5+2/5)+(4/7+1/7+2/7)=1+1=2

b: =(12/13+8/13+6/13)+(2/7+5/7)=2+1=3

a) =\(\dfrac{21}{35}+\dfrac{10}{35}+\dfrac{4}{35}=\dfrac{21+10+4}{35}=\dfrac{35}{35}=1\)
b) =\(\dfrac{16}{24}+\dfrac{15}{24}-\dfrac{12}{24}=\dfrac{19}{24}\)
c) =\(\dfrac{35}{40}+\dfrac{80}{40}-\dfrac{24}{40}+\dfrac{120}{40}=\dfrac{35+80-24+120}{40}=\dfrac{211}{40}\)

\(y-\dfrac{2}{3}=\dfrac{3}{10}\)

\(y=\dfrac{3}{10}+\dfrac{2}{3}\)

\(y=\dfrac{29}{30}\)

b) \(y+\dfrac{3}{4}=\dfrac{10}{3}\)

    \(y=\dfrac{10}{3}-\dfrac{3}{4}\)

    \(y=\dfrac{31}{12}\)

a) y= 3/10+2/3

y= 29/30

b) y= 10/3-3/4

y= 31/12

y−23=310

y−23=310

y=310+23

y=310+23

y=2930y=2930

b) y+34=103

 y=103−34y=103−34

 y=3112