Subtract using columns.Subtract (6x9 - 2x5 + 7x2 - 8) from (3x9 + 5x7 - 8x2 + 13) .
A. -3x9 + 5x7 - 2x5 - 15x2 + 21
B. 3x9 + 5x7 - 2x5 - 15x2 + 21
C. -3x9 + 5x7 + 2x5 - 15x2 + 21
D. 3x9 + 5x7 + 2x5 - 15x2 + 21
Answer: C
Mathematics
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