It appears to be a change in the way expressions are written in print. In our time everything after the division symbol was the denominator. Apparently not any more.Do they still teach the Order of Operations these days? Or did Common Core kill that for some other ****ed up thought process
8÷2(2+2)
8 / 2(4)
8 / 2 * 4
4 * 4
16
PEMDAS
Parens
Exponents
Multiplication/division (left to right)
Addition/Subtraction (left to right)
I suspect the missing multiplication sign between the 2 and the (2+2) throws some folks.
BTW: MS Excel says 8/2*(2+2) = 16
Same interpretation problem exists. Are you saying:So in a slightly less trivial example, simplify the expression 8/2(X + X) and then solve for X=2
[U] 8 [/U]
2*(X+X)
8
___ * (X + X)
2
8/2(X + X) ---> 8/2*2X ---> 8/4X --->2/X finish simplifying before solving. You can also think of it as a fraction and at 8/2(X + X) you can multiply both numerator and denominator by 0.5 and arrive at the same result