Algebra Math Help

can you help me with my Pre Algebra homework? very simple!?

Simplify the expression.
-( j + 9 ) -13j + 12

- ( j + 9 ) -13j + 12

Math tells us to always start with the parantheses. The negative sign is in fact a -1, but since everything multiplied by 1 stays the same, there is no need to write out -1. Imagine it’s like this:

-1(j+9)

-1*j= -j -1*9= -9

So now we have -j-9-13j+12.

Now add the common terms. Whatever has “j” goes together, and regular numbers gos together.

-j – 13= -14j -9+12=3

Your answer is:

-14j+3

Have a great day.

College Pre-algebra Homework Help & Video Tutorials – Graphing Lines Using Intercepts (Pt 1)