Question

write an expression that equals (x-13). It must have at leat two sets of parentheses and one minus sogn.Verify that it is equal to (x-13)​

Answer 1

You can perform all kind of operation that are one the inverse of the other, so that the value won't change. For example, you can multiply and divide by 2:

$\dfrac{1}{2}(2(x-13))$

Or add and subtract 5:

$\left(\dfrac{1}{2}(2(x-13))+5\right)-5$