Simplify -3xy^3+7xy^3+(-xy^3)+(-3xy^3)

$- 3 x y^{3} + 7 x y^{3} + (- x y^{3}) + (- 3 x y^{3})$

Step 1

Remove parentheses.

$- 3 x y^{3} + 7 x y^{3} - x y^{3} - 3 x y^{3}$

Step 2

Add $- 3 x y^{3}$ and $7 x y^{3}$ .

$4 x y^{3} - x y^{3} - 3 x y^{3}$

Step 3

Subtract $x y^{3}$ from $4 x y^{3}$ .

$3 x y^{3} - 3 x y^{3}$

Step 4

Subtract $3 x y^{3}$ from $3 x y^{3}$ .

$0$