Question

100 - 10 x ( X + 1 ) = 20

Answer 1

100 - 10(X + 1 ) = 20

10( X+1 ) = 80

x+1 = 8

x=7

Answer 2

100 - 10 x ( X +1 ) = 20

10 x ( X +1 ) = 100 -20

10 x ( x + 1 ) = 80

X + 1 = 80 : 10

X + 1 = 8

X = 8 -1 

X = 7
 

Answer 3

Ta có : 100-10x(x+1)=20

<=> 10x(x+1)=100-20=80

       x+1       =80:10=8

       x           =8-1=7

Answer 4

100 - 10 x ( X + 1 ) = 20

=10.(x+1)= 100 -20

=10.(x+1)= 80

x+1= 80:10

x+1=8

=> x+1=8

=> x=7

Answer 5

100 - 10 x ( X +1) = 20

=> 10 x ( X +1) = 100 - 20 = 80

=> X + 1 = 80 : 10 = 8

=> X = 8 - 1 = 7 

=> x = 7

Answer 6

10x(x+1)=80

x+1=8

x=7

t nha 

Answer 7

100-10.(x+1)=20

       10.(x=1)=100-20

        10.(x+1)=80

              x+1=80:10

                 x+1=8

                 x=8-1

                 x=7

Nho h cho minh nha

     

     x+1=20:90

Answer 8

minh quen xoa dong cuoi cung thong cam nha

Answer 9

100 - 10 x ( X+1 ) =20

      =>   10 x ( X+1 ) = 100 - 20

      =>   10 x ( X+1 ) = 80

            =>    ( X+1 ) =80 : 10

            =>    ( X+1 ) = 8

            =>     X    = 8 - 1

            =>     X    = 7