x + 80 = 200 - 100

x + 80 = 100

x        = 100 - 80

x        = 20

Vậy x = 20

x + 80 = 200 - 100

x + 80 = 100

x = 100 - 80

x = 20 

x + 80 = 200 - 100

x + 80 = 100

x = 100 - 80

x = 20 

=500 

k mình nha bn

:))

200 + 300 - 100 + 100 = 500

200+300-100+100=500

tk mk nha

\(x+100=200-300+100\)

\(x+100=-100+100\)

\(x+100=0\)

               \(x=0-100\)

               \(x=-100\)

x=-100

x +100=200-300+100

x+100=-100+100

x+100=0

x=0-100

x=-100

x+100=200-200+100-100+300

x+100=300

x=300-100

x=200

tk mk mk tk lại

x + 100 = 200 - 200 + 100 - 100 + 300

x + 100 = 300

x          = 300 - 100

x          = 200

Vậy số tự nhiên x cần tìm là 200

x+100=200-200+100-100+300

x+100=0+0+300

x-200=0+300

x-200=300

x=300+200

x=500

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

- 1x100=100

- 2x200=400

- 3x300=900

-100

-400

-900

Cho mk xin mấy tk đi các bạn

- 1 x 100 = 100

- 2 x 200 = 400

- 3 x 300 = 900

k nha mn

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=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

a) x= -300 -100

x = -400

b) x= -300 +100

x= -200 

1)x+100=200-500

x+100=-300

x=-300-100

x=-400

2)x-100=200-500

x-100=-300

x=-300+100

x=-200

\(x+100=200-500\)

\(x+100=-300\)

\(x=-300-100\)

\(x=-400\)

\(x-100=200-500\)

\(x-100=-300\)

\(x=-300+100\)

\(x=-200\)