137+4 (2x+3)=200(hình như đề bài sai)

200-6(x-5)=140

        6(x-5)=200-140

        6(x-5)=60

           x-5=60:6

           x-5=10

              x=10+5

              x=15

140:(x-8)=7

        x-8=140:7

        x-8=20

         x=20+8

         x=28

137+4(2x+3)=200

4(2x+3)=200-137

4(2x+3)=63

2x+3=63:4

2x+3=\(\frac{63}{4}\)

2x=\(\frac{63}{4}\)-3

2x=\(\frac{51}{4}\)

x=\(\frac{51}{4}\):2

x=\(\frac{51}{8}\)

Vậy ...

200-6(x-5)=140

6(x-5)=200-140

6(x-5)=60

x-5=60:6

x-5=10

x=15

Vậy...

140:(x-8)=7

x-8=140:7

x-8=20

x=20+8

x=28

Vậy...

k mik nhé

137 + 4 ( 2x + 3) =200

          4 (2x+3)=200-137

          4 (2x+3)=     63

            (2x+3)=63:4
               2x+3= 15,75

               2x     =15,75-3

              2x      =  12,75

                x       =12,75:2

                 x       =6,375

200-6 . ( x-5) = 140

        6 (x-5)   = 200-140
        6 (x-5)   =  60

           (x-5)    =60:6

           x-5       = 10

          x           =10-5

          x           =5

140 : (x-8)=7

         (x-8)=140:7

        x-8=    20

         x      =20+8

         x=28

140:(x-8)=7

x-8=140:7

x-8=20

x=20+8

x=28

140:(x-8)=7

x-8=140:7

x-8=20

   x=20+8

   x=28

140:(x-8)=7

=>x-8=140:7

=>x-8=20

=>x=20+8

=>x=28

Vậy x=28

\(\left(x-140\right):7=33-23.3\\ \left(x-140\right):7=33-69\\ \left(x-140\right):7=-36\\ x-140=-36.7\\ x-140=-252\\ x=-252+140\\ x=-112\)

\(\left(x-140\right):7=33-23.3\)
\(\left(x-140\right):7=33-69\)
\((x-140):7=-36\)
\(x-140=-252\)
\(x=-112\)

\((x-140):7=33-23.3\)

\((x-140):7=33-69\)

\((x-140):7=-36\)

\(x-140=-36.7\)

\(x-140=-252\)

\(x=-252+140\)

\(x=-112\)

\(\left(x-140\right):7=27-8\times3\Rightarrow x=\left(27-24\right)\times7+140=161\)

Vậy x là 161

\(\left(x-140\right)\div7=27-8\times3\)

\(\Leftrightarrow\)\(\left(x-140\right)\div7=27-24\)

\(\Leftrightarrow\)\(\left(x-140\right)\div7=3\)

\(\Leftrightarrow\)\(\left(x-140\right)=3\times7\)

\(\Leftrightarrow\)\(x-140=21\)

\(\Leftrightarrow\)\(x=21+140\)

\(\Leftrightarrow\)\(x=161\)

140 : 10 ( x - 8 ) = 7

10 ( x - 8 ) = 140 : 7 

10 ( x - 8 ) = 20

( x - 8 ) = 20 : 10

x - 8 = 2

x = 2 + 8 

x = 10

14(x-8)=7

(x-8)=14:7

x-8=2

x=2+8

x=10

~~~~Học Tốt~~~~

140 : 10 ( x - 8 ) = 7 

=> 10 ( x - 8 ) = 140 : 7 = 20

=> x - 8 = 20 : 10 = 2

=> x = 2 + 8 = 10

140:x-8=7

=>x-8=140:7

=>x-8=28

=>x=28+8

=>x=36

\(140:x-8=7\)

\(\Leftrightarrow140:x=7+8\)

\(\Leftrightarrow140:x=15\)

\(\Leftrightarrow x=140:15\Leftrightarrow x=\frac{140}{15}=\frac{28}{3}\)

Vậy kết quả \(x\)cần tìm là : \(\frac{28}{3}\)

140:x-8=7

x-8=140:7

x-8=20

x=20+8

x =28

chac chan luon .nho k nhe

140:(x-8)=7

x-8=140:7

x-8=20+8

x=28

140:(x-8)=7

x-8=140:7

x-8=20

x=20+8

x=28

tick đúng nha

Trả l 

140 : ( x - 8 ) = 7

x - 8 = 140 : 7 

x - 8 = 20

x = 20 + 8

x = 28

a) 89 - (73 - x) = 20

73 - x = 89 - 20 = 69

x = 73 - 69 = 4

b) 140 : (x-8) = 7

x - 8  = 140 : 7 = 2

x = 8 + 2 = 10

\(a,89-\left(73-x\right)=20\\ 73-x=69\\ x=4\\ b,140:\left(x-8\right)=7\\ x-8=20\\ x=28\)

a: x=4

b: x=28

140:(2^x-12)=7

2^x-12=140:7

2^x-12=20

2^x=20+12

2^x=32

2^x=2⁵

vậy x =5

\(140:\left(2^x-12\right)=7\)

\(2^x-12=140:7=20\)

\(2^x=20+12=32\)

\(\Rightarrow2^x=2^5\)

\(\Rightarrow x=5\)

140;(2^x-12)=7

2^x-12=140:7=20

2^x=20+12=32

x=\(\sqrt{32}\)hoăc -\(\sqrt{32}\)

vậy......

(x - 140) : 7 = 3^3 - 2^3 . 3

(x - 140) : 7 = 27 - 8 . 3

(x - 140) : 7 = 27 - 24

(x - 140) : 7 = 3

 x - 140        = 3 . 7

 x - 140        = 21

 x                  = 21 + 140

 x                  = 161

(x-140):7=3^3-2^3.3

(x-140):7=27-8.3

(x-140):7=27-24

(x-140):7=3

 x-140    =3.7

 x-140    = 21

 x          =21+140

x           = 161