(-49)×18;(-25)×(+31);70×(-19)+(-1)×70 using distributive property
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-49*18
-49 can be written as -50+1
18[-50=1]
-900+18=[-882]
2.-25*[+31]
=-25[30+1]
={[-750]-[-25]}
=[-775]
3.70*[-19]+[-1]*70
take 70 as common
=70{[-19]+[-1]}
=-1400
-49 can be written as -50+1
18[-50=1]
-900+18=[-882]
2.-25*[+31]
=-25[30+1]
={[-750]-[-25]}
=[-775]
3.70*[-19]+[-1]*70
take 70 as common
=70{[-19]+[-1]}
=-1400
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