x+100=200

x=200-100

x=100

x-100=200-300

x-100=-100

x=0

k mk nha

x + 100 = 200

         x = 200 - 100

         x = 100

x - 100 = 200 - 300

x - 100 = -100

        x = -100 + 100

        x = 0

x=200-100

x=100

x-100=200-300

x-100=-100

x=-100+100

x=0

b) 200 x 4 = .800.....              300 x 2 = ..600....

200 x 2 = .400.....             300 x 3 = ...900...

400 x 2 = ...800...             500 x 1 = ..500....

100 x 4 = ..400....             100 x 3 = .300.....

800

400

800

400

600

900

500

300

ai giúp mình với

300+(100-x)=200

          100-x=200-300

           100-x=-100

                  x=100-(-100)

                  x=-200

100 - x = 300 - 200

100 - x = 100

         x = 100 - 100

         x = 0

Vậy x = 0

k mk nha

= 400 đó bạn

100 + x = 200 + 300

100 + x = 500

         x = 500 - 100

         x = 400

100+x=200+300

100+x=500

x=500-100

x=400

x + 200 = 300 + 100

x + 200 = 400

x = 400 - 200

x = 200

k mk nha

Mk cảm ơn các bạn nhiều

Thank you so much

( ^ _ ^ )

x=200 ban nhe

x+ 200= 300+100

x+ 200= 400

x= 400-200

x= 200

x+100=-100

x       = -100 - 100

x       = -200

x+300=200

x       = 200-300

x       =-100

k nha!

x+100=-100

x=-100-100-200

x+300=200

x=200-300

x=-100

a)x+100=200-300

x+100=(-100)

x       =(-100)-100

x       =(-200)

b)x+300=200

   x       =200-300

  x          =-100

300-x=200-100

300-x=100

x=300-100

x=200

k mk rồi mk k bạn

300-x =100

x=300-100

x=200

300 - x = 200 - 100

300 - x = 100

        x = 300 - 100

       x = 200

Ai k mình mình k lại

x + 300 = 200 x 3 - 100 

=> x + 300 = 600 - 100

=> x + 300 = 500

=> x = 500 - 300

=> x = 200

vậy x  = 200

x+300=600-100

x+300=500

x=500-300=200 tk nha mik nha nhất!^_^

x+ 300= 500

x= 500-300

x= 200

c) 

400 ml + 300 ml = 700 ml

800 ml : 4 = 200 ml

700 ml – 300 ml = 400 ml

200 ml x 4 = 800ml