a) 65.16=(-65).(-16)
b)25.(-17)=(-25).17
a) \(65.16=1040\)
\(\rightarrow\left(-65\right).16=65.\left(-16\right)=-1040\)
\(\left(-65\right).\left(-16\right)=1040\)
\(\Rightarrow65.16=\left(-65\right).\left(-16\right)=1040\)
b) \(25.\left(-27\right)=-675\)
\(\rightarrow\left(-25\right).\left(-17\right)=25.17=675\)
\(\left(-25\right).17=-675\)
\(\Rightarrow25.\left(-17\right)=\left(-25\right).17=-675\)
a) 65.16=104065.16=1040
→(−65).16=65.(−16)=−1040→(−65).16=65.(−16)=−1040
(−65).(−16)=1040(−65).(−16)=1040
⇒65.16=(−65).(−16)=1040⇒65.16=(−65).(−16)=1040
b) 25.(−27)=−67525.(−27)=−675
→(−25).(−17)=25.17=675→(−25).(−17)=25.17=675
(−25).17=−675(−25).17=−675
⇒25.(−17)=(−25).17=−675