a: 275-(113+x)+63=158

=>275+63-113-x=158

=>275-50-x=158

=>225-x=158

=>x=225-158

=>x=67

b: 115-2(x-3)=55

=>2(x-3)=115-55=60

=>x-3=30

=>x=30+3

=>x=33

c: \(\left(x-1\right)^2=1\)

=>\(\left[\begin{array}{l}x-1=1\\ x-1=-1\end{array}\right.\Rightarrow\left[\begin{array}{l}x=1+1=2\\ x=-1+1=0\end{array}\right.\)

d: 565-13x=370

=>13x=565-370=195

=>\(x=\frac{195}{13}=15\)

e: x(x-1)=0

=>\(\left[\begin{array}{l}x=0\\ x-1=0\end{array}\right.\Rightarrow\left[\begin{array}{l}x=0\\ x=1\end{array}\right.\)

g: (x+2)(x-4)=0

=>\(\left[\begin{array}{l}x+2=0\\ x-4=0\end{array}\right.\Rightarrow\left[\begin{array}{l}x=-2\\ x=4\end{array}\right.\)

l: \(x^3\cdot x^2=2^8:2^3\)

=>\(x^{3+2}=2^{8-3}\)

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

=>x=2

a.

\(3-\left(17-x\right)=289-\left(36+289\right)\)

\(3-17+x=289-36-289\)

\(x=\left(289-289\right)+\left(-36-3+17\right)\)

\(x=-22\)

b.

\(x-73=\left(-35\right)+\left|-55\right|\)

\(x-73=-35+55\)

\(x=-35+55+73\)

\(x=93\)

c.

\(\left|x\right|-3=2\)

\(\left|x\right|=3+2\)

\(\left|x\right|=5\)

\(x=\pm5\)

Vậy x = 5 hoặc x = -5

d.

\(\left|x+1\right|=5\)

\(x+1=\pm5\)

TH1:

\(x+1=5\)

\(x=5-1\)

\(x=4\)

TH2:

\(x+1=-5\)

\(x=-5-1\)

\(x=-6\)

Vậy x = 4 hoặc x = -6

a, \(3-17+x=289-36-289\)

\(\Rightarrow x-14=-36\)

\(\Rightarrow x=-22\)

\(b,x-73=\left(-35\right)+\left|-55\right|\)

\(\Rightarrow x-73=\left(-35\right)+55\)

\(\Rightarrow x-73=20\)

\(\Rightarrow x=93\)

\(c,\left|x\right|-3=2\)

\(\Rightarrow\left|x\right|=5\)

\(\Rightarrow x=\pm5\)

\(d,\left|x+1\right|=5\)

\(\Rightarrow\) \(\left[\begin{array}{nghiempt}x+1=5\\x+1=-5\end{array}\right.\) \(\Rightarrow\) \(\left[\begin{array}{nghiempt}x=4\\x=-6\end{array}\right.\)

a: =>3x=10+14=24

=>x=8

b: =>25-30-x=-19

=>-5-x=-19

=>x+5=19

=>x=14

c: =>15-x=12+14=26

=>x=-11

d: =>4x+11-x-34=67

=>3x-23=67

=>3x=90

=>x=30

e: =>-x-14=289-36-289=-36

=>x+14=36

=>x=22

a) 3x=24
     x=8
b) 25-30-x=-19
    25-30+19=x
     14=x
c) 15-x=26
         x=-11
d) 4x+11-x-34=67
    3x=90
      x=30
e) -14-x= -36
          x=-14 -36
          x= 22
      
 

e) Ta có : ( x + 1 ) + ( x + 2 ) + ( x + 3 ) + .... + ( x + 100 ) = 5750 

<=> 100x + ( 1 + 2 + 3 + ...... + 100) = 5750

=> 100x + 5050 = 5750

=> 100x = 700

=> x = 7

a) x = 31 ; 32 ; 33 ; 34 ; 35 ; 36 ; 37 ; 38 ; 39

Câu thứ 3 hình như sai đề

Sao ban chui ban ay?

3-(17-x)=289-(36+289)

3-(17-x)=-36

   17-x=-36+3

    17-x=39

         x=17-39

         x=-22

Nho cho mk nhe!!!!!!

3-(17-x)=289-(36+289)

3-(17-x)=-36

    17-x=39

         x=17-39

         x=-22

Vay x=-22

Nho cho mk 1 h nha!!!