=40000

=6776

học tốt

200 x 200 = 40000

77 x 88 = 6776

Học tốt

Tk mk nha

1.=40000

2.=6776

25 – 2x = 16 – 3x

-2x + 3x = 16 - 25

x = -9

Vậy x = -9

x - (47 - 22 ) = 5 + (10-4x)

x - 47 + 22    = 5 + 10 - 4x

x + 4x = 5 + 10 - 22 + 47

5x       = 40

x         = 40 : 5

x         = 8

Vậy x = 8.

~ HOK TỐT ~

\(\text{25 – 2x = 16 – 3x}\)

\(2x+3x=16-25\)

\(5x=-9\)

\(\Rightarrow x=\frac{-9}{5}\)

\(\text{d) x – (47 – 22) = 5+ (10 – 4x)}\)

\(x-47+22=5+10-4x\)

\(x+4x=5+10-22+47\)

\(5x=40\)

\(\Rightarrow x=8\)

học tốt

\(25-2x=16-3x\)

\(\Leftrightarrow25-2x-16=-3x\)

\(\Leftrightarrow-2x+9=-3x\)

\(\Leftrightarrow-3x+2x=9\)

\(\Leftrightarrow-x=9\Leftrightarrow x=9\)

Vậy ...

\(x-\left(47-22\right)=5+\left(10-4x\right)\)

\(\Leftrightarrow x-47+22=5+10-4x\)

\(\Leftrightarrow x-25=5+10-4x\)

\(\Leftrightarrow x-25=-4x+15\)

\(\Leftrightarrow x=-4x+15+25\)

\(\Leftrightarrow x=-4x+40\)

\(\Leftrightarrow x+4x=40\Leftrightarrow5x=40\Leftrightarrow x=8\)

Vậy ...

a, 2\(x\) + 4 - 5\(x\) = -11

    -(5\(x\) - 2\(x\)) + 4 = -11

    -3\(x\)         + 4 = -11

     3\(x\)              = 11 + 4

     3\(x\)              = 15

       \(x\)              = 15 : 3

        \(x\)              = 5

b, \(x\) - (-5) = 8

    \(x\) + 5 = 8

    \(x\)       = 8 - 5

    \(x\)       = 3

c, (\(x\) + 2)² = 25

   \(\left[{}\begin{matrix}x+2=5\\x+2=-5\end{matrix}\right.\)

  \(\left[{}\begin{matrix}x=3\\x=-7\end{matrix}\right.\)

1/(-37) +14+26+37

=[(-37)+37] +(14+26)

=       0       +   40

=    40

2/(-24) +6 +10+24

=[(-24)+24] +(10+6)

=     0         +16

=16

3/15+23+9+(-25) +9+(-23)

=[(-23)+23] +[(-25)+15] +(9+9)

=     0         +       (-10)    +18

=     0         +           8

=   8

4/60 +33 +(-50) +(-33)

 =[(-33)+33]+[60 +(-50)]

=    0          +   10

=    10

5/(-16)+ (-209) + (-14) +209

=[(-209)+209] +[(-16)+(-14)]

=     0              +(-30)

=      -30

6/(-12) +(-13)+36 +(-11)

  =[(-12) +(-11)] +[ 36+(-13)]

 =        (-23)       +       23

=     0

 Chúc bn hok tốt !!!

1, (-37)+14+26+37=[(-37)+37]+14+26=0+40=40

2, (-24)+6+10+24=[(-24)+24]+6+10=0+16=16

3 , 15+23+(-25)+(-23)=[15+(-25)]+[23+(-23)]=-10

4, 60+33+(-50)+(-33)= [60+(-50)]+[33+(-33)]=10

5, (-16)+(-209)+(-14)+209=[(-16)+(-14)]+[(-209)+209]=-30

6, (-12)+(-13)+36+(-11)=[(-12)+(-11)]+[(-13)+36]=(-23)+23=0

\(155-\frac{25}{2}\times4\times\frac{1}{10}+x\div\frac{3}{4}=200\)

\(\rightarrow155-5+x\div\frac{3}{4}=200\)

\(\rightarrow150+x\div\frac{3}{4}=200\)

\(\rightarrow x\div\frac{3}{4}=200-150\)

\(\rightarrow x\div\frac{3}{4}=50\)

\(\rightarrow x=50\times\frac{3}{4}\)

\(\rightarrow x=\frac{75}{2}\)

Vậy \(x=\frac{75}{2}\)

a, 17-(2+x)=3

=> x+2= 14

=> x=12

b, (6+x)+(17-21)= -25

6+x- 4= -25

=> x+2=-25

=> x= -27

c, nhận xét / x-1/>=0

=> x-1= 3

=> x=4

A ) 17-(2+x)=3

=> x+2= 14

=> x=12

B ) (6+x)+(17-21)= -25

6+x- 4= -25

=> x+2=-25

=> x= -27

C ) Có nhận xét / x-1/>=0

=> x-1= 3

=> x=4

đ/s : ...

Đề bài : \(\dfrac{97}{20}\times\left(\dfrac{25}{8}-\dfrac{221}{200}\right)< x< \dfrac{91}{10}\times\left(\dfrac{137}{20}+\dfrac{11}{4}\right)\)

\(\dfrac{97}{20}\times\left(\dfrac{25}{8}-\dfrac{221}{200}\right)=\dfrac{97}{20}\times\dfrac{101}{50}=\dfrac{9797}{1000}\)

\(\dfrac{91}{10}\times\left(\dfrac{137}{20}+\dfrac{11}{4}\right)=\dfrac{91}{10}\times\dfrac{48}{5}=\dfrac{2184}{25}=\dfrac{2184\times40}{25\times40}=\dfrac{87360}{1000}\)

\(\Rightarrow\dfrac{9797}{1000}< x< \dfrac{87360}{1000}\)

Vậy \(x\in\left(\dfrac{9797}{1000};\dfrac{87360}{1000}\right)\)