polynomials subtraction

Question

 

subtract: (12a²b²c-6abc²-9a²b²c-3abc)-(8a²b²c-4abc²-10abc+5a²bc²⁾

Answer 1

(12a2b2c-6abc2-9a2b2c-3abc)-(8a2b2c-4abc2-10abc+5a2bc2)

 

12a2b2c-6abc2-9a2b2c-3abc-8a2b2c+4abc2+10abc-5a2bc2 = (12a2b2c-8a2b2c-9a2b2c) + (-6abc2+4abc2) + (-3abc+10abc) - 5a2bc2

 

-5a2b2c - 2abc2 + 7abc - 5a2bc2

 

Please let me know if you understand the process of solving such problems. If you still have issues, please message me. Thanks

Andy Lai