x+100=200

      x =200-100

      x =100.

Ai tk mk mk tk lại!

\(100+100\)

\(=100.2\)

\(=200\)

k mk nhe

trao doi k ko

1 + 1 = 2

K mình, mình k lại nhé!

42.(52-17)-52.(42-17)

=42.52-42.17-52.42+52.17

=-42.17+52.17

=17.(-42+52)

=17.10

=170

40 x 1200 + 60 x 1200

= ( 40 + 60 ) x 1200 

= 100 x 1200 

= 120000