Question

Where can we put parentheses in 9 x 3 – 4 : 2 to make it equivalent to 25?Choose 1 answer:A(9 x 3) - (4:2)B9 x (3 – 4:2)

Answer 1

We have to find which expression is equivalent to 25.

We can calculate both and see which one is equal to 25.

Expression from Option A:

$(9\cdot3)-(\frac{4}{2})=27-2=25$

Option A is a valid solution. We now can test the Option B, to see if this can also be a solution:

$9\cdot(3-\frac{4}{2})=9\cdot(3-2)=9\cdot1=9$

This is not a valid solution.

Answer: (9*3)-(4/2) [Option A]