Question

I'm not able to understand this sum can u pls explain the answer
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Answer 1

Using distributive property,

             

                 $\boxed{ a \times [b+c]= b \times[a+c]}$

Therefore,

     

[(-5)×7]×(-2) = (-5)×[7×(-2)]

[-35] ×(-2) = (-5) ×[ -14]

70 = 70

         $\boxed{Hence \;our\; answer \;is\; 70\; by \;this\; property.}$

Answer 2

Using distributive property,

a×[b+c]=b×[a+c]

Therefore,

[(-5)×7]×(-2) = (-5)×[7×(-2)]

[-35] ×(-2) = (-5) ×[ -14]

70 = 70