x + 300 = 400 - 300

x + 300 = 100

x = 100 - 300

x = -200

k mk mk k lại 

x+300=400-300

x+300=100

x=100-300

x=-200

x+300=400-300

x+300=100

x=100-300

x=-200

\(x+300=400-300\)

\(x+300=100\)

              \(x=100-300\)

              \(x=-200\)

x + 100 = 200 - 300

x + 100 = -100

x = ( -100 ) - 100

x = -200.

x + 100 = 200 - 300

x + 100 = -100

          x = -100 - 100

          x = -200

k cho tớ trước

tớ k lại sau

x + 100 = 200 - 300

x + 100 = -100

x = -100 - 100

x = -200

x + 100 = 200 - 300

x + 100 = - 100

x          = -100 - 100

x           = 200

 Vậy x = 200

x+100=200-300

x+100=-100

x=-100-100

x=-200

x+100=200-300

x+100=-100

x=-100-100

x=-200

x = 50

k mk,mk k lai bn

50 nhe co ai ket ban voi minh ko

x+200=500.2+100-200

x + 200 = 1000 + 100 - 200

x + 200 = 1100 - 200

x + 200 = 900

      x = 900 - 200

       x = 600

x+200=400,2

x=400,2-200

x=200,2

x+ 200 = 500.2 + 100-200

x+200 = 1000 + 100 - 200

x+200 = 1100 - 200

x+200 = 900

=> x = 700

vậy x = 700

= -200

K mk đi, mk k lại

x + 100 = 300 - 500 + 100

x + 100 = -200 + 100

x + 100 = -100

          x = -100 + 100

          x = 0

x+100=300-500+100

x+100=-100

x=-100-100

x=-200.

Tích mik nha, mik tích bạn rùi!

x + 100 = 200 - 100 - 100

x + 100 = 0

x          = 0 - 100

x          = -100

Vậy x = - 100

x+100=200-100-100

x+100=0

x       =0-100

x       =-100

x+100=200-100-100

x+100=100-100

x+100=0

x=0-100

x=-100

x+ 200 = 700- 400 - 100

x+ 200 = 300-100

x+ 200 = 200

x = 200-200

x=0

x+200=700-4000-100

x+200=-3300-100

x+200=-3200

x=-3200-200

x=-3400

-3600 ra âm đó

x + 100 = 50 x 2 + 100 - 100 + 200 - 800 + 1 000

x + 100 = 100 + 100 - 100 + 200 - 800 + 1 000

x + 100 = 100 + 200 - 800 + 1 000

x + 100 =    ( -500) + 1 000

x + 100 = 500

x = 500 - 100

x = 400.

x+100=50.2+100-100+200-800+1000

x+100=100+100-100+200-800+1000

x+100=200-100+200-800+1000

x+100=100+200-800+1000

x+100=300-800+1000

x+100=-500+1000

x+100=500

x=500-100

x=400