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OpenStudy (anonymous):
Steps to solve: (3x^2 + 7x^3 + 4) - (8x + 8) - (8x^3 - 8 + 3x) I know you have to add the opposite but I am confused when you have +__ or - __ (as in, the operation before the number is a plus or minus and I wonder do I change the - to a + and + to a -?)
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