=715 k mik nha

bbbbbbbbbbb

\(234+235+236-123-123\)

\(=459\)

k nhé chúc học tốt

a) \(\left(125+x\right)+68=236\)

\(\Rightarrow125+x=236-68\)

\(\Rightarrow125+x=168\)

\(\Rightarrow x=168-125\)

\(\Rightarrow x=43\)

b) \(2x-1=123\)

\(\Rightarrow2x=124\)

\(\Rightarrow x=\frac{124}{2}=62\)

4. Tìm x biết :
a) (125 + x) + 68 = 236

(125 + x) = 236 - 68

(125 + x) = 168

x = 168-125

x= 43

b) 2x - 1= 123

123+x+2x=2x+345-236

<=>x+2x-2x=345-236-123

<=>x=-14

vậy x=-14

1324+x+x=125-2x-3x

<=>x+x-2x-3x=125-1324

<=>-3x=-1199

<=>x=\(\frac{1999}{3}\)

vậy x=\(\frac{1999}{3}\)

k mk nha mấy bạn

\(123+x+2x=2x+345-236\)

\(\Leftrightarrow2x+345-236-2x-x=123\)

\(\Leftrightarrow109-x=123\)

\(\Leftrightarrow x=-14\)

123+236=359

123+236=359

123 + 236 = 359.

2480  - 4710 : 3 + ( 200 - ( x - 5 ) ) = 1010

2480 - 1570 + (200 - ( x - 5 ) ) = 1010

910 + 200 - ( x - 5 ) = 1010

1010 - ( x - 5 ) = 1010

x - 5 = 0

x =  5

Vậy x = 5

2480 -4710 : 3 + [ 200 - ( x -5 ) ] = 1010

=> 2480-1570+[200-x+5]=1010

=> 910+200-x+5=1010

=> 1110-x+5=1010

=> 1115-x=1010

=> x=1115-1010

=> x=105

x=105

****

2480 - 4710 : 3 + [ 200 - ( x - 5 ) ] = 1010

2480 - 1570 + [ 200 - ( x - 5 ) ] = 1010

910 + [ 200 - ( x - 5 ) ] = 1010

         [ 200 - ( x - 5 ) ] = 1010 - 910

         [ 200 - ( x - 5 ) ] = 100

                   ( x - 5 )   = 200 - 100

                   ( x - 5 )   = 100

                     x          = 100 + 5

             =>    x          = 105

492;1379;1888;2322

123x4=492

197x7=1379

236x8=1888

387x6=2382