Question

90 x 1 - 90 x 1 - 90 x 0 + 90 x 1

NHANH NHẤT MÌNH K NHA 

Answer 1

= 90 x ( 1 - 1 - 0 + 1 ) 

= 90 x 1

= 90 

mk đầu tiên 

Answer 2

= 90 - 90 - 0 + 90 = 90

Knha

Answer 3

=90 bn nha

Answer 4

\(90.1-90.1-90.0+90.1\)

\(=90-90-0+90\)

\(=0-0+90\)

\(=0+90\)

\(=90\)

Answer 5

90x1-90x1-90x0+90x1

=90x(1-1+0+1)

=90x1

=90

Answer 6

  90 x 1 - 90 x 1 - 90 x 0 + 90 x 1

=    90   -    90   -      0   +     90

=                            90

k nha ^_-

Answer 7

=90 x(1-1+1+0)

=90x1

=90

Answer 8

=90 x(1-1+1+0)

=90x1

=90

Answer 9

=90 x(1-1+1+0)

=90x1

=90

Answer 10

= 90 nha bn !

Answer 11

lấy 90 x 0 +90 x1 = 90 nhé

Answer 12

lấy 90 - 90 -0 +90 = 90