The correct answer for 48÷2(9+3)
Remember that expressions in paranthesis ()
are executed first, followed by other expressions in order of hierarchy. Operands of the same hierarchical level are executed in order from left to right. The omission of an operand at either of these locations n(
in an equation implies *
by default, i.e. n*(
. So we get the following:
48÷2(9+3) = 48÷2(12) = 48÷2*12 = 288
It would have been 2 had multiplication had a higher hierarchical level than division.
Just realised I've voted for the wrong option.