Verified Answer :

  1. Just do the operation inside the parenthesis
    7 x 20 - 6
    140 - 6
    132

    2. Similarly, do the operation inside the parenthesis first
    10 x 46 + 3
    460 + 3
    463

    Do the same thing: parenthesis first, them exponents, then multiplication/division, and finally, addition/subtraction