x + 100 = 50 x 2 + 100 - 100 + 200 - 800 + 1 000

x + 100 = 100 + 100 - 100 + 200 - 800 + 1 000

x + 100 = 100 + 200 - 800 + 1 000

x + 100 =    ( -500) + 1 000

x + 100 = 500

x = 500 - 100

x = 400.

x+100=50.2+100-100+200-800+1000

x+100=100+100-100+200-800+1000

x+100=200-100+200-800+1000

x+100=100+200-800+1000

x+100=300-800+1000

x+100=-500+1000

x+100=500

x=500-100

x=400

x+63=95

x=95-63

x=32

x+900=1000

x=1000-900

x=100

=32

=100 nhe tk minh rui minh tk lai cho nho kb nhe

=2 mk gui tin nhan kb rui nha

1 + 1 = 2

kb phải k ok

x+100=155-55

x+100=100

        x=100-100

        x=0

vay x=0

 x+100=155-55

=>x+100=100

=>x=0 

Vậy x=0

nhớ tích minh nha

x+89=90

     x=90-89

     x=1

x+1=66

    x=66-1

    x=65

nho do nhae

x + 89 = 90

       x  = 90 - 89

       x  = 1

x + 1 = 66

     x  = 66 - 1

     x  = 65

x + 100 = 200 - 300

x + 100 = -100

x = ( -100 ) - 100

x = -200.

x + 100 = 200 - 300

x + 100 = -100

          x = -100 - 100

          x = -200

k cho tớ trước

tớ k lại sau

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 + 100 = 200 - 300

x + 100 = - 100

x          = -100 - 100

x           = 200

 Vậy x = 200

x+100=200-300

x+100=-100

x=-100-100

x=-200

x + 90 + 10 = 100 - 40

x + 100 = 100 - 40

x + 100 = 60

x = 60 - 100

x = -40

x+90+10=100-40

x+100=100-40

x+100=60

x=60-100

x=-40