-65.(87-17)-87.(17-65)= -65.87+65.17-87.17+87.65=(-65.87+87.65)+(65.17-87.17)=0-374= -374

-65 (87 - 17) - 87 (17 - 65)

=-65.87- -65.17 - 87.17-87.65

=(65.87-87.65)-(65.17-87.17)

=        0         - [17.(65-87)]

=        0         - (17.-22)

=        0         -  (-374)

=  374

a, [ 13-17 ].[-10]+[-7]⁰

=-4.[-10]+1

=40+1

=41

b, 72.[28-49] + 28.[-49-72]

=72.[-21]+28.[-121]

=-1512+[-3388]

=-4900

c, -65.[87-17] - 87.[17-65]

=-65.70-87.[-48]

=4550-[-4276]

=8726

d, -23.63+23.21-58.23

=23.(-63)+23.21-58.23

=23.(-63+23-58)

=23.(-40-58)

=23.(-98)

=-2254

e, 25.134+25.[-34]

=25.[134+(-34)]

=25.100

=2500

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

87 - 4176 + ( -1105)

= -5194

=-65.87+65.17-87.17+65.87=

=17(65-87)=-17.22

-65 . ( 87 -17 ) -87 . ( 17 - 65 )

=(-65).70-87.(-48)

=(-4550)-(-4176)

=(-374)

\(-65.\left(87-17\right)-87.\left(17-65\right)\)

\(=-65.70-87.\left(-48\right)\)

\(=\left(-4550\right)-\left(-4176\right)=-374\)

  − 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.

-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

-65.(87-17)-87.(17-65)

=-65.70-87.(-48)

=-4550+4176

=-374

=374

nhe

kb nha

65 . (87 - 17) + 87 . (17 - 65)

= 65 . 87 - 65 . 17 + 87 . 17 - 87 . 65

= 65 . (87 - 17 - 87) + 87 . 17

= 65 . (-17) + 87 . 17

= (-65) . 17 + 87 . 17

= 17 . (-65 + 87)

= 17 . 22

= 374

374

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