Ta có : \(\dfrac{x-50}{50}+\dfrac{x-51}{49}+\dfrac{x-52}{49}+\dfrac{x-53}{47}+\dfrac{x-200}{25}=0\)

\(\Leftrightarrow\dfrac{x-50}{50}-1+\dfrac{x-51}{49}-1+\dfrac{x-52}{49}-1+\dfrac{x-53}{47}-1+\dfrac{x-200}{25}+4=0\)

\(\Leftrightarrow\dfrac{x-100}{50}+\dfrac{x-100}{49}+\dfrac{x-100}{49}+\dfrac{x-100}{47}+\dfrac{x-100}{25}=0\)

\(\Leftrightarrow\left(x-100\right)\left(\dfrac{1}{50}+\dfrac{1}{49}+\dfrac{1}{48}+\dfrac{1}{47}+\dfrac{1}{25}\right)=0\)

<=> x - 100 = 0

<=> x = 100

Vậy ..

Ta có: \(\dfrac{x-50}{50}+\dfrac{x-51}{49}+\dfrac{x-52}{48}+\dfrac{x-53}{47}+\dfrac{x-200}{25}=0\)

\(\Leftrightarrow\dfrac{x-50}{50}-1+\dfrac{x-51}{49}-1+\dfrac{x-52}{48}-1+\dfrac{x-53}{47}-1+\dfrac{x-200}{25}+4=0\)

\(\Leftrightarrow\dfrac{x-100}{50}+\dfrac{x-100}{49}+\dfrac{x-100}{48}+\dfrac{x-100}{47}+\dfrac{x-100}{25}=0\)

\(\Leftrightarrow\left(x-100\right)\left(\dfrac{1}{50}+\dfrac{1}{49}+\dfrac{1}{48}+\dfrac{1}{47}+\dfrac{1}{25}\right)=0\)

mà \(\dfrac{1}{50}+\dfrac{1}{49}+\dfrac{1}{48}+\dfrac{1}{47}+\dfrac{1}{25}>0\)

nên x-100=0

hay x=100

Vậy: S={100}

x+x=200:100+50

2x=2+50

2x=52

x=52:2

x=26

vậy...

x + x = 200 : 100 + 50

x² = 52

x² = 52

bạn milala sai rồi. x+x=2x chứ ko phải là x+x=x². x² phải =x.x chứ!!!

200 - X = 2 x 50

200 - X = 100

X = 200 - 100

X = 100

Chúc bạn học tốt!

200-x=100

x=200-100

x=100

k mình nha 

200 - x = 2 x 50

200 - x = 100

          x = 200 - 100

          x = 100

kết bạn nhé

x + 50 = 200 + 100

x + 50 = 300

         x = 300 - 50

         x = 250

250 do ban nha

k cho mk nha

x + 50 = 200 + 100

x + 50 = 300

x        = 300 - 50

x        = 250

\(x+50=200+300\)

\(x+50=500\)

           \(x=500-50\)

           \(x=450\)

x + 50 = 200 + 300

x + 50 = 500

x         = 500 - 50

x         = 450

x + 50 = 200 + 300

x + 50 = 500

       x  = 500 - 50

       x  = 450                       k mk nha~~

x - 200 = 600 + 50

x - 200 = 650

x         = 650 + 200

x          = 850

Vậy x = 850

X=850

x-200=600+50

x-200=650

x=650-200

x=450

k cho mk nhé

x+50=200-150

x+50=50

x=50-50

x=0

k đi rìu mình k lại

x + 50 = 200 - 150

x + 50 = 50

x        = 50 - 50

x        = 0

x + 50 = 200 - 150 

x + 50 = 50

       x= 50 - 50

       x = 0

100 x 200 : 50 x 4000 - 3528

= 2000 : 50 x 4000 - 3528

= 40 x 4000 - 3528

= 160 000 - 3528

= 156472

100 x 200 : 50 x 4000 - 3528 = 20000 : 50 x 4000 - 3528

                                               = 400 x 4000 - 3528

                                               = 1600000 - 3528

                                               = 1596472

Tham khao nha !

100 * 200 / 50 * 4000 - 3528 = 20000 / 50 * 4000 - 3528 = 400 * 4000 - 3528 = 1600000 - 3528 = 1596472

\(x\inƯ\left(200\right)\cap B\left(50\right)=\left\{50;100\right\}\)

\(x\in\left\{50;100\right\}\)