(7×82)+(7×18)=
750
700
600
70
We know that, multiplying two numbers separately by 7 and then adding is same as multiplying the sum of two numbers by 7.
i.e., If x and y are any two numbers, then 7x+7y=7(x+y)
So, (7×82)+(7×18) =7×(82+18) =7×100=700