Posted by
**Pat** on
.

Evaluate [-7] - [-8]

-7-(-8) = -7+8=+1

Always remember that a ( + and + gives us + ) and a ( - and - gives us + ) and a + and - gives us -

Always when subtracting or adding take the sign of the biggest number which will be the sign of your answer , and work out if it is a + or - by this rule