=900 nha bạn

X+10=300+700

X+10=1000

X=1000-10

X=990

Vậy X=990

x+100=300+700

x+100=1000

x=1000-100

x=900

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

= 4500

200+100+300+400+500+600+700+800+900

= ( 200 + 800 ) + ( 100 + 900 ) + ( 300 + 700 ) + ( 400 + 600 ) + 500

= 1000                  +       1000         +             1000              + 1000            +          500 

= 1000 x 4 + 500

= 4000 + 500 

= 4500

= (200+800)+(100+900)+(300+700)+(400+600)+500

=   1000      +    1000     +  1000      +   1000      +500

= 4000+500

=4500

x - 100 = 900 + 100

x - 100 = 1000

x          = 1000 + 100

x          = 1100

mik k roi , k mik nha

x - 100 = 900 + 100

x - 100 = 1000

x = 1000 - 100

x = 900

x-100=900+100

x-100=1000

x=1000+100

x=1100

100+100=200

 k nha happy nha nhanh nhat

100 + 100 = 200

100 + 100 = 200

= 100 nha

100+100-200+100=100

100+100-200+100=200-200+100

                          =0+100

                          = 100

số cần tìm là :

100 + 100 = 200

đ/s:200

tu mik hoi lai tu mik tra loi ham wa

100 + 100 = 200 nha bạn

(50+50)+100:100

=100+100:100

=100+1

=101

(50+50)+100:100=100+1=101

 k mk nha

(50+50) + 100 :100

=100+1

=101

x+_100=500

x=500-100

x=400

k nha bn!!!

x + 100 = 200 + 300

x + 100 = 500

x = 500 - 100

x = 400 

x + 100 = 200 + 300

x + 100 = 500

x = 500 -100

x = 400

ai k mk đủ 3 cái mk k lại