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17-65.(87-17)-87.(17-65)
=17-65.87-17.87.17-65
=(17-17).(65-65).(87-87)-17
=0.0.0-17
=0-17
=-17
![](https://rs.olm.vn/images/avt/0.png?1311)
-65 . ( 87 -17 ) -87 . ( 17 - 65 )
=(-65).70-87.(-48)
=(-4550)-(-4176)
=(-374)
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− 65 ( 87 − 17 ) − 87 ( 17 − 65 ) = − 65.87 + 65.17 − 87.17 + 87.65 = 87.65 − 65.87 + 17 65 − 87 = 0 + 17. − 22 = − 374.
![](https://rs.olm.vn/images/avt/0.png?1311)
-65.(87-17)-87.(17-65)
=-65.87+65.17-87.17+87.65
=65.(-87+87)+17.(65-87)
=67.0+17.(-22)
=0-374
=-374
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
-65.(87 - 17) - 87.(17 - 65) = 65.(17 - 87) - 87.17 + 87.65 = 65.17 - 65.87 + 65.87 - 87.17 = (65 - 87).17 = -22.17 = -374
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-65 . 87 - (-65 . 17) - 87.17 + 87.65
= -65 . 87 + 65 . 17 - 87 . 17 + 87 . 65
= 87 . (-65 + 65) + 17 . (65 - 87)
= 87 . 0 + 17 . (-22)
= 0 + (-374)
= -374
87 - 4176 + ( -1105)
= -5194