98 x 456 x 123 x 753 x 246 x 2222 x 11 x 11 x 11 x 25 x 36 x 25 x 12 x 13 x 159 x 487 x 258 x 12589 x 1524 x ( 36987 - 36987 ) = 0

:)))

98 x 456 x 123 x 753 x 246 x 2222 x 11 x 11 x 11 x 25 x 36 x 25 x 12 x 13 x 159 x 487 x 258 x 12589 x 1524 x ( 36987 - 36987 ) =0

ht

k mk nha

\(-87+\left(-12\right)-\left(-487\right)-\left(-487\right)+512\)

\(=-87+\left(-12\right)+487+487+512\)

=\(\left(\left(-12\right)+512\right)+\left(\left(-87\right)+487\right)+487\)

=\(500+400+487\)

\(=900+487\\ =1387\)

=-87+(-12)+487+487+512

=((-12)+512)+((-87)+487)+487

=500+400+487

=900+487

1387

487 x 789 + 487 x 211

= 487 x ( 789 + 211 )

= 487 x 1000

= 487 000

456 + 324 + 456 + 1234

= 780 + 1690

= 2470 

4567 + 1278 + 1224

= 5845 + 1224

= 7069

=479899

=2470

=7069

Đáp án:

- 87 + ( - 12 ) - ( - 487 ) + 512

= - 87 + ( - 12 ) + 487 + 512

= -87 + 487 + ( - 12 ) + 512

= 400 + 500

= 900

900

(-87) + (-12) + 487 + (-512)

= (-87 + 487) - (12 + 512)

= 400 - 524

= -124

( -87) + (- 12) + 487 + (- 512)

= [ (-87) + 487] +  [(- 12) + (- 512)]

= 400 +  (- 524)

= -124

\(-87+12-\left(-487\right)+\left(-512\right)\)

\(=-87+12+487-512\)

\(=\left(-87+487\right)+\left(12-512\right)\)

=400-500

=-100

-87 + 12 - (-487) + (-512)

= (-87 + 487) + (12 - 512)

= 400 - 500

= -100

các bạn giúp mk đi

487 + 204 = 691