Answer:
0
Step-by-step explanation:
Step 1 :
Equation at the end of step 1 :
(((0-(3x•(y3)))+(7x•(y3)))+(0-(x•(y3))))+(0-3xy3)
Step 2 :
Equation at the end of step 2 :
(((0-(3x•(y3)))+7xy3)+ -xy3)+ -3xy3
Step 3 :
Equation at the end of step 3 :
(((0 - 3xy3) + 7xy3) + -xy3) + -3xy3
Step 4 :
Final result :
0
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