Question

tính:

315+135+(-315)+(-15)

Answer 1

\(315+135+\left(-315\right)+\left(-15\right)\)

\(=315+135-315-15\)

\(=\left(315-315\right)+\left(135-15\right)\)

\(=0+120\)

\(=120\)

Answer 2

   315 + 135 +(-315) + (-15)

= [315+(-135)] + [135 + (-15)]

=      0 + 120

= 120

k mk nha bn

Answer 3

120 nha k mik

Answer 4

315 + 315 + ( -315) + ( -15 ) 

= [ 315 + ( -15) ] + [ 315 + ( -315 ) ]

= [ 315 - 15 ] + 0

= 300 + 0

= 300

Answer 5

315 + 135 + (- 135) + (- 15)

= [ 315 + (-315) ] + [ 135 + (-15) ]

= 0 + 120

= 120

Answer 6

315 + 135 + ( -315 ) + ( -15 )

= [ 315 + ( - 315 ) ] + [ 135 + ( -15 ) ]

= 0 + 120 = \(120\)

Answer 7

=120 
Have a nice day !

Answer 8

315 + 135 + (-315) + (-15)

= 315 + (-315) + 135 + (-15)

= 0 + 120

= 120

Answer 9

315 + 135 + (-315) + (-15)

= 315 + (-315) + 135 + (-15)

= 0 + 120

= 120

Answer 10

315 + 135 + (-315) + (-15)

= 315 + (-315) + 135 + (-15)

= 0 + 120

= 120

Answer 11

315+135+(-315)+(-15)
= 315 + 135 - 315 - 15 
= ( 315-315) + ( 135-15)
=       0          +       120 = 120 

Answer 12

315 + 135 + (-315) + (-15)

= 315 + (-315) + 135 + (-15)

= 0 + 120

= 120

Answer 13

315 + 135 + ( -315 ) + ( -15 ) = {( 315 + ( -315 )} + {( 135 + ( -15 )}

                                          = 0 + 120

                                          = 120

Answer 14

315 + 135 + (-315) + (-15)

= 315 + (-315) + 135 + (-15)

= 0 + 120

= 120

Answer 15

315 + 135 + (-315) + (-15)

= 315 + (-315) + 135 + (-15)

= 0 + 120

= 120

Answer 16

315 + 135 + ( - 315 ) + ( - 15 )

= [ 315 + ( - 315 ) ] + [ 135 + ( - 15 ) ]

= 0 + 120

= 120