Answer:
0
Step-by-step explanation:
[tex]-3xy^3+7xy^3+(-xy^3)+(-3xy^3)[/tex]
To simplify we need to combine like terms
Here all terms have variable xy^3
So all terms are like terms
To combine all the like terms, we need to add the coefficient of all the terms
For example 5x + 2x is 7x
-xy^3 is -1xy^3
[tex]-3xy^3+7xy^3+(-1xy^3)+(-3xy^3)[/tex]
(-3 + 7 -1-3) xy^3
0xy^3
0 times anything is 0
So answer is 0
