x+200=300+400+2

x+200=702

x       =702-200

x       =502

K  mk nha

mk k lại

x+200=300+400+2

x+200=700+2

x+200=702

x=702-200

x=502

x+200=300+400+2

x+200=702

x=702-200

x=502

k mk ik,xog mk k bn cho

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 = 700

x =700-100

x=600

x + 100 = 400 + 300

x + 100 = 700

       x   = 700 - 100

       x   = 600

k nha ^^

x + 100 = 400 + 300

x + 100 = 700

         x = 700 - 100

         x =600

Tk mk mk tk lai

x+200=300-400-500

x+200=-100-500

x+200=-600

x=-600-200

x=-800

mình nè x= -800

x + 200 = 300 -400 -500

x + 200 = -600

x          = -600 - 200

x          = -800

x+700=900-100

x+700=800

x        = 800-700

x         = 100

x+300=400+500

x+300=900

x       = 900-300 

x       = 600

x+100=900+300

x+100= 1200

x        = 1200 - 100

x       = 1100

x+700=900-100

x+700=800

x       =800-700

x       =100

x+300=400+500

x+300=900

x       =900-300

x       =600

x+100=900+300

x+100=1200

x      =1200-100

x      =1100

x + 700 = 900 - 100

x + 700 = 800

x = 800 - 700

x = 100

x + 300 = 400 + 500

x + 300 = 900

x = 900 - 300

x = 600

x + 100 = 900 + 300

x + 100 = 1200

x = 1200 - 100

x = 1100

X x 100 + X x 200 + X x 300 + X x 400 + X x 500 + X x 512 = 2012

X = 2012 : ( 100 + 200 + 300 + 400 + 500 + 512)

X = 2012 : 2012

X = 1 

 Nhớ k mình nhé

X x 100 + X x 200 + X x 300 + X x 400 + X x 500 + X x 512 = 2012

X x ( 100 + 200 + 300 + 400 + 500 + 512 )                         = 2012

X x 2012                                                                          = 2012

                                                                        X             = 2012 : 2012

                                                                        X             = 1

x+200=300+500:5

x + 200 = 300 + 100

x + 200 = 400

        x = 400 - 200

         x = 200 

x+200=300+500:5

x+200=300+100

x+200=400

x=400-200

x=200

t tôi nhé

x + 200=300 + 500 : 5

x + 200 = 300+ 100

x + 200 = 400

x = 400 - 200

x = 200

x+200=500:5+23

x+200=100+23

x+200=123 bà chủ k nhé

x+200=300+200:5+23

x+200=300+40+23

x+200=340+23

x+200=363

x=363-200

x=163

x+200=300+200:5+23

=>x+200=300+40+23

=>x+200=363

=>x=363-200

=>x=163

= 200

= 400

= 600

= 800

= 1000

=200

 400

 600

 800

 1000

Chúc bạn hok tốt!

= 200

= 400

= 600

= 800

= 1000

Rất tiếc mình là Swiftes ( Fan Taylor Swift )