X  * ( 5/ 6+ 1/6 ) =425

X  * 1 =425

X = 425/1

X=425

X * ( 1/2 + 1/3 + 1/6 ) = 425

X * 1 = 425

X = 425 : 1

X = 425

\(x=425\)

X=425

x x 1 = 425

      x = 425 : 1

      x = 425

x = 425

k mk nhe

x *(1/2+1/3+1/6)=425

x *         1        =  425

x                     =425:1

x                   =425

=> x*(5/6+1/6)=425

=> x*1=425

=> x=425:1

=> x=425

x . (1/2+1/3+1/6)=425

x .1=425

x=425:1=425

\(x.\left(\frac{1}{2}+\frac{1}{3}+\frac{1}{6}\right)=425\)

\(x.\left(\frac{3}{6}+\frac{2}{6}+\frac{1}{6}\right)=425\)

\(x.1=425\)

\(x=425\)

a x * 4 + [1/2 + 1/4 + 1/8 + 1/6] = 23/16

x * 4 +             25/24             = 23/16

x * 4                                     = 23/16 - 25/24

x * 4                                     =   38/96 = 19/48

x                                          = 19/48 / 4

x                                          = 19/172

b x *         1              = 425

x                              = 425 / 1

x                              =    425

5,5 + \(\dfrac{3}{4}\) - 5 + \(\dfrac{1}{4}\)

(5,5 - 5) + (\(\dfrac{3}{4}\) + \(\dfrac{1}{4}\))

= 0,5  + 1

= 1,5 

\(\dfrac{5}{2}\) x  \(\dfrac{2}{3}\) + \(\dfrac{1}{4}\) : \(\dfrac{3}{2}\)

= \(\dfrac{5}{2}\) x \(\dfrac{2}{3}\) + \(\dfrac{1}{4}\) x \(\dfrac{2}{3}\)

=  (\(\dfrac{5}{2}\) + \(\dfrac{1}{4}\)) x \(\dfrac{2}{3}\)

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

= \(\dfrac{11}{4}\) x \(\dfrac{2}{3}\)

= \(\dfrac{11}{6}\) 

Tính \(x\): 

  435  - [\(x\) + 16] = 425 : 17

  435 - [\(x\) + 16] = 25

          [\(x\) + 16] = 435 - 25

           \(x\) + 16 = 410

           \(x\)        = 410 - 16

          \(x\)         = 394

\(x\) x \(\dfrac{1}{4}\) - \(\dfrac{3}{4}\) = 6 : \(\dfrac{3}{4}\)

\(x\) \(\times\) \(\dfrac{1}{4}\) - \(\dfrac{3}{4}\) = 6 x \(\dfrac{4}{3}\)

\(x\) x \(\dfrac{1}{4}\) - \(\dfrac{3}{4}\)  = 8

\(x\) x \(\dfrac{1}{4}\)        = 8 + \(\dfrac{3}{4}\)

\(x\) x \(\dfrac{1}{4}\)        = \(\dfrac{32}{4}\) + \(\dfrac{3}{4}\)

\(x\) x \(\dfrac{1}{4}\)       = \(\dfrac{35}{4}\)

\(x\)              =  \(\dfrac{35}{4}\) : \(\dfrac{1}{4}\)

\(x\)              = \(\dfrac{35}{4}\) x 4

\(x\)             = 35

Đề không rõ ràng. Bạn xem lại nhé.

\(x-\dfrac{3}{6}=\dfrac{28}{6}-\dfrac{1}{2}\\ x-\dfrac{3}{6}=\dfrac{28}{6}-\dfrac{3}{6}\\ x-\dfrac{3}{6}=\dfrac{25}{6}\\ =>x=\dfrac{25}{6}+\dfrac{3}{6}=\dfrac{28}{6}=\dfrac{14}{3}\)

\(x-\dfrac{3}{6}=\dfrac{28}{6}-\dfrac{1}{2}\)

\(x-\dfrac{3}{6}=\dfrac{28-3}{6}=\dfrac{25}{6}\)

\(=>x=\dfrac{25}{6}+\dfrac{3}{6}=\dfrac{25+3}{6}=\dfrac{28}{6}=\dfrac{4}{1}\)

\(\dfrac{14}{3}\)