hey. know pemdas? follow that.
it goes
parentheses
exponents
multiplication and division
addition and subtraction
so
(18 + 17) (12 + 9) - (7 x 16) (4 + 2)
Begin by multiplying 7 and 16 to get 112. Then do the adding and subtracting inside the parentheses.
to get:
(35)(21)-(112)(6)
Then multiply the 35 with 21 and the 112 with 6.
735-672
which is equal to
= 63
