a: =-(4*125*7*3)
=-(500*21)
=-10500
b: \(=24\left(-21\cdot2+142\right)=24\cdot100=2400\)
c: \(=-65\cdot87+65\cdot17-87\cdot17+87\cdot65=17\cdot\left(-22\right)=-374\)
d: \(=11\left(-31-43-26\right)=11\cdot\left(-100\right)=-1100\)
e: \(=\left(-168\right)\left(1+72+27\right)=-16800\)
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=-(500*21)
=-10500
b: =24(−21⋅2+142)=24⋅100=2400
c: =−65⋅87+65⋅17−87⋅17+87⋅65=17⋅(−22)=−374
d: =11(−31−43−26)=11⋅(−100)=−1100
e: =(−168)(1+72+27)=−16800
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