Subtract.(0.7x4 - 0.8x3 + 0.9) - (4.6x4 + 2.1x - 1.3)
A. -3.9x4 - 0.8x3 - 2.1x + 2.2
B. -3.9x4 - 0.9x3 - 0.4
C. -3.9x4 - 0.8x3 - 2.1x - 0.4
D. -3.9x4 - 0.8x3 + 2.1x + 2.2
Answer: A
Mathematics
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