BẠN TICK CHO MÌNH TRƯỚC ĐI RỒI MÌNH GIẢI CHO. DỄ ỢT Ý MÀ

ngu như con bò

xx+x+5=125

3x+5    =125

3x        =125-5=120

 x         =120/3=40

xx+x+5=125

2x+x+5=125

3x+5=125

3x    =125-5=120

 x     =120/3=40

x5xx chiax5 bằng bao nhiêu

XX - 1X x 2 = 34

X x 11 - ( 10 + X ) x 2 =34

X x 11 -20 - X x 2 = 34

X x 9 = 34 + 20 = 54

X = 54 : 9 = 6

\(xx-1x\times2=34\)
\(\Leftrightarrow xx-2x=34\)
\(\Leftrightarrow x\left(x-2\right)=34\)
\(\Leftrightarrow\orbr{\begin{cases}x=34\\x=36\end{cases}}\)

a: \(\overline{xx}+\overline{x}+5=125\)

=>10x+x+x=120

=>12x=120

=>x=10

b: \(\overline{xxx}+\overline{xx}+x+x=992\)

=>100x+10x+x+10x+x+2x=992

=>124x=992

=>x=8(nhận)

c: \(4725+\overline{xxx}+\overline{xx}+\overline{x}=54909\)

=>100x+10x+x+10x+x+x=54909-4725

=>123x=50184

=>x=408

d: \(\overline{xxx}-\overline{xx}-\overline{x}-25=4430\)

=>100x+10x+x-10x-x-x=4430+25

=>99x=4425

=>x=4425/99(loại)

e: \(\overline{xxx}+\overline{xx}+\overline{x}+\overline{x}+\overline{x}+1=1001\)

=>111x+11x+3x=1000

=>125x=1000

=>x=8

f: \(35655-\overline{xxx}-\overline{xx}-\overline{x}=5274\)

=>35655-111x-11x-x=5274

=>35655-123x=5274

=>123x=35655-5274=30381

=>x=247

x + xx + 5 = 125

x + xx = 125 - 5

x + xx = 120

x + x * 11 = 120

x * ( 11 + 1 ) = 120

x * 12 = 120

x = 120 : 12

x= 10

Vậy x = 10

x + xx + 5 = 125

x + xx = 125 - 5

x + xx = 120

x + X x 2 = 120

X x 3 = 120

      X = 120 : 3

      X = 40

Bài 2

a) x=5

b)x=1

`7 xx x + 5 xx x = 175 + 125`

`( 7 + 5 ) xx x = 300`

`12 xx x = 300`

`x = 300 : 12`

`x = 25`

a) 7 x X +5 x X = 175 + 125.

7 + 5 x X = 300.

12 x X = 300.

x=300 : 12.

x=25.

Vậy X = 25.

Tick nha cảm ơn bạn.

Xx125+Xx876-X=12000 
Xx125+Xx876-Xx1=12000 
Xx(125+876-1)=12000 
Xx(1001-1)=12000 
Xx1000=12000 
X =12000:1000 
X=12

k cho mình nha!

\(125x+876x-x=12000\)

\(\Leftrightarrow125x+876x-1x=12000\)

\(\Leftrightarrow x\left(125+876-1\right)=12000\)

\(\Leftrightarrow1000x=12000\)

\(\Leftrightarrow x=12000\div1000\)

\(\Leftrightarrow x=12\)

\(\text{Vậy }x=12\)