C1\(5.10+5.10\)

\(=5.\left(10+10\right)\)

\(=5.20\)

\(=100\)

C2 \(5.10+5.10\)

\(=10.\left(5+5\right)\)

\(=10.10\)

\(=100\)

K MK NHE

CAM ON

10,2

tk mk nhé bn 

thanks bn

a) x + 100 = 50 + 60

x + 100 = 110

x = 110 - 100

x = 10

b) x + 50 = 30 + 60

x + 50 = 90

x = 90 - 50

x = 40

_______________________________________________THE END_____________________________________________________

a)=10

b)40 

tk m nhé

x - 90 = 500 - 200

x - 90 = 300

x        = 300 + 90

x        = 390

x-90=500-200

x-90=300

   x =300+90

   x =390.

x - 20 = 50 + 50

x - 20 = 100

       x = 100 + 20

       x = 120

tk nha

x - 20 = 50 + 50

x - 20 = 100

x       = 100 + 20

x       = 120

\(x-100=500+100\)

\(x-100=600\)

              \(x=600+100\)

              \(x=700\)

Vậy \(x=700\)

chúc bn học gioi!@ shi nit chi

x - 100 = 500 + 100

x - 100 = 600

x         = 600 + 100

x          = 700

x + 300 = 200 x 2

x + 300 = 400

        x   = 400 - 300

        x   = 100

tk nha

x=100

a) x : 132 = 564

x = 564 x 132

x = 74448

b) 234 : x = 9

x = 234 ; 9

x = 26

c) 455 : x = 5

x = 455 : 5

x = 91

Mk nhanh nhất đó 

a. x= 564.132

x=74448

b.x= 234:9

x=26

c.x=455:5

x=91

tk mk mk tk lại

x + 200 = 300 + 400

x + 200 = 700

         x = 700 - 200

         x = 500                     k mk nha~~

x+200=300+400

x+200=700

   x    =700-200

         =500

50 + 50 = 100

k mk nha~~

100!!!!!!!!!!!!!!!

a x 2 = 100

a      = 100 : 2

a      = 50