x+300=900-100
x+700=900-100
x+300=400+500
x+100=900+300
ai tick mk 3 cái mk tick lại người đó 3 cái lụn
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-100=200+900
x+100=300-400
x - 100 = 200 + 900
x - 100 = 1100
x = 1100 + 100
x = 1200
x + 100 = 300 - 400
x + 100 = - 100
x = - 100 - 100
x = - 200
x+100=200+900
x+100=1000
x=1000-100
x=900
x+100=300-400
x+100=-100
x=-100-100
x=-200
X-100=200+900
X-100=1100
X =1100+100
X =1200
x + 300 = 900 - 100
x+300=900-100
x+300=800
x =800-300
x =500.
Tk mk nhé!Thank you!
x + 300 = 900 - 100
x + 300 = 800
x = 800 - 300
x = 500
tk đi rồi tk lại
tk nha thank you
x + 300 = 900 - 100
x + 300 = 800
x = 800 - 300
x = 500
ai tk mk mk tk nha
thank you very much !!!
x + 200 + 300 - 100 = 900
x + 200 + 300 - 100 = 900
=> không biết
Uung ho nha
x + 200 + 300 - 100 = 900
x + 400 = 900
x = 900 - 400
x = 500
tk mk nha mk sẽ tk lại
x + 200 + 300 - 100 = 900
x + 500 - 100 = 900
x + 400 = 900
x = 900 - 400
x = 500.
100+100+200+200+300+300+400+400+500+500+600+600+700+700+800+800+900+900+?
100+100+200+200+300+300+400+400+500+500+600+600+700+700+800 = 6400
100+200+300+400+500+600+700+800+900+100+200+300+400+500+600+700+800+900
1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111222222222222222222222222222222223333333333333333333333333333333333333333333333334444444444444444444444444444444444444455555555555555555556666666666666666677777777777777777777777777777777777777777777777778888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888
900000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000213131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313
100+200+300+400+500+600+700+800+900+100+200+300+400+500+600+700+800+900
\(=\left(100+900\right)+\left(800+200\right)+...+\left(900+100\right)\)(9 cặp)
\(=1000+1000+...+1000\)(9 số 1000)
\(=1000\times9\)
\(=9000\)
k mình nha
111100000000000000000000111110103
x+100=300-600
x+700=900-700
x + 100 = -300
x = -300 -100
x = -400
x + 700 = 900 - 700
x + 700 = 200
x = 200 - 700
x = -500
x+100=-300
x=-300-100
x=-400
x+700=200
x=200-700
x=-500
x + 100 = 300 - 600
x + 100 = - 300
x = - 300 - 100
x = - 400
100+200+300+400+500+600+700+800+900+100+200+300+400+500+600+700+800+900=
LAM HO MK VOI
Số số hạng là : ( 900 - 100 ) : 100 + 1 = 9 ( số )
Tổng là : ( 900 + 100 ) . 9 : 2 = 4500
Tổng thực là : 4500 . 2 = 9000
~ Chúc học tốt ~
Ai ngang qua xin để lại 1 L - I - K - E