x+100=200

x       =200-100

x       =100

x-200=600+700

x-200=1300

x      =1300+200

x      =1500

x+100=200

x=200-100

x=100

x-200=600+700

x-200=1300

x=1300-200

x=1100

x + 100 = 200

         x = 200 - 100

         x = 100

x - 200 = 600 + 700

x - 200 = 1300

        x = 1300 + 200

        x = 1500

k mik mik k lại

x + 200 = 600 + 100 

x + 200 =700

x = 700 - 200 

x=500

x - 600 = 400 + 600

x - 600 = 1000

x = 1000 + 600

x = 1600

k mk nha lan hương

a] x bằng 500

b] x bằng 1600

a) x+200=700

x=700-200

x=500

b) x-600=1000

x=1000+600

x=1600

x + 100 = 600 + 200

x + 100 = 800

x = 800 - 100

x = 700

x=700

x+100=600+200

x+100=800

x=800-100

x=700

k mk nhé

x + 100 = 600 + 200

x + 100 = 800

x          = 800 - 100

x          = 700

x + 100 = 600 + 200

x + 100 = 800

       x   = 800 - 100

       x   =    700 

 bấm mình nha bạn mình trả lời đầu tiên ?

x+100=600+200

x+100=800

     x   =800-100

     x   =700.

Tk mk nhé!Thank you!

x+100=800

x       =800-100

x       =700

Bạn k cho mình nhé!

X+100=800

800-100=X

700=X

X=700

x + 100 = 600 + 200

x + 100 = 800

x = 800 - 100

x = 700.

9000

100+100+200+200+300+300+400+400+500+500+600+600+700+700+800 = 6400

9000

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900000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000213131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313

=9000

\(=\left(100+900\right)+\left(800+200\right)+...+\left(900+100\right)\)(9 cặp)

\(=1000+1000+...+1000\)(9 số 1000)

\(=1000\times9\)

\(=9000\)

k mình nha

111100000000000000000000111110103

c) 

400 ml + 300 ml = 700 ml

800 ml : 4 = 200 ml

700 ml – 300 ml = 400 ml

200 ml x 4 = 800ml