a)1700

b)2000

a, 500+500+500+(100 x 2)

=500 x 3+ 100x2

=1500+200

=1700

b, 700+300+(100 x 10)=700+300+1000=1000+1000=2000

k minh nha

a) x . x . x = 125

x³ =125

x³ = 5³

= > x = 5

b) ( x + 500 ) = 1000 - 200 . 2

x + 500 = 1000 - 400

x + 500 = 600

x = 600 - 500

x = 100

a) 2 100 : 10 = 210

    4 500 : 100 = 45

    83 000 : 1 000 = 83

b) 720 : 10 : 8 = 72 : 8 = 9

    1 500 : (5 x 100) = 1 500 : 5 : 100 = 300 : 100 = 3

    60 000 : 1 000 x 6 = 60 x 6 = 360

x+500=600

x=600-500

x=100

tk minh nha

minh tk lai

x=100

K NHA BAN 

x + 100 = 500 + 500

x + 100 = 1000

          x = 1000 - 100

          x = 900

ai k mk mk k l

ại ^_^

x + 100 = 500 + 500

x + 100 = 1000

x          = 1000 - 100

x          =        900

500 + x = 100 + 500

500 + x = 600

          x = 600 - 500

          x = 1001

300 - x = 300 + 200

300 - x = 500

         x = 300 - 500

         x = -200

400 - x = 200 + 400

400 - x = 600

         x = 400 - 600

         x = -200

k mk nha mk k l

ại ^_^

500 + 100 = 100 + 500

300 + 200 =  300 + 200

400 + 200  = 200 + 400

x +100 = 500 : 2

x+ 100 = 250

x=250-100

x= 150

x+500= 650

x= 650-500 

x= 150 

k giúp mik nhé

x + 100 = 500 : 2

x + 100 = 250

x = 250 - 100

x = 150

x + 500 = 600

x = 600 - 500

x = 100

K mk mk k lại

Hứa luôn 

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 = 500 + 500

x + 100 = 1000

x = 1000 - 100

x = 900

Tk mk nha 

x + 100 = 500 + 500

x  + 100 = 1000

x           = 1000 - 100

x            = 900

Vậy x = 900

k nha

x+100=400

x=400-100

x=100

k mình nha

x + 100 = 500 - 100

x + 100 = 400

x = 400 - 100

x = 300

Vậy x = 300

Ai tk mk 

Mk k lại