I tutor fifth grade math and I wanted to make a code that can generate an expression in the form:

a ( b + c ), where a, b, and c are random numbers of my choosing and the + can be either + or -. I also would like to be able to choose the number of equations generated.

Does anybody have any suggestions to help me out?

For example:

How many equations? 3

5 ( 4 - 2 )

7 ( 8 + 7 )

1 ( 9 + 2 )