Question

9x1x5= & I have to use parentheses

Answer 1

You can place the parentheses anywhere cause if you do (9x1)5 it will equal 45. And if you do (5x1)9 it will also be 45. So where ever you put it , it will equal the same amount. But, jus in case next time asked your teacher or friends for further help.

Answer 2

(9 x1) x 5 = 9 x 5 = 45

9 x (1 x 5) = 5 x 9 = 45

So it doesn't matter where the parentheses were suppose to go as you can see I worked it both ways and the answer is the same.

Hope this helps you. :-)