Question

Tìm x :

10 + 20 = 50 - x

Answer 1

10 + 20 = 50 - x 

50 - x = 30

x = 50 - 30

x = 20

Answer 2

50-x=10+20

=>50-x=30

=>x=50-30

=>x=20

 t tôi nha 

năn nỉ đó

Answer 3

10 + 20 = 50 - x 

30 = 50 - x

x = 20 

Answer 4

10 + 20 = 50 - x

=> 30=50-x

=> x=50-30

=> x= 20

Answer 5

\(10+20=50-x\)

\(30=50-x\)

   \(x=50-30\)

  \(x=20\)

Answer 6

ta có 10+20 =50-x

suy ra 30=50-x

x=50-30=20

Answer 7

10+20=50-x

=>50-x=30

=>x=50-30

=>x=20

Trong trường hợp trên : x=20

Answer 8

10+20=50-x

=> 50-x=10+20

     50-x=30

         x=50-30

         x=20

Answer 9

10 + 20 = 50 - x

30 = 50 - x

=> x = 50 - 30

=> x = 20

Answer 10

10+20=50-x

= 50 - x = 10+ 20

=50 - x =30

        x = 50 -30

        x=20

Answer 11

10 + 20 = 50 - x

   30       = 50 - x

     x        = 50 - 30

      x       = 20