Intermediate Test Prep Math 8 (Grade 7) Adding and Subtracting Monomials Part 2

Now let's look at some different problems...

(If you want to go back to Part 1, click here.)

-5x + 3x -8x -x (Remember there is a "1" in front of the "x" making it a "-1x".)	Following order of operations, we must solve left to right. -5+3 is -2 -2 -8 is -10 -10 -1 is -11	Now that we have solved the integer part of the solution we now attach the x! Answer: -11x
7x²-8x²+11x²-6x²	Again, solve left to right. 7 -8 is -1 -1 +11 is 10 10 -6 is 4	Answer: 4x²

What if the problem has various terms in it?

3ab -10x -7ab-2x

We can only combine the terms that are exactly alike!

So we can combine the "ab" terms and the "x" terms.

3ab and -7ab is -4ab

-10x and -2x is -12x

Put the two terms together for our answer:

-4ab -12x

-11y -c + 4y -7c

We can combine the "y" terms and the "c" terms.

-11y and 4y is -7y

-c and -7c is -8c

Put the two terms together for our answer:

-7y -8c

Let's practice!!!

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