Answer: c
Explanation:
Write the Equation
= 5.5x + 6.2y + 4.3x + 8.3z + 1.6z - 5.1y
Re-arrange them
= 5.5x + 4.3x + 6.2y - 5.1y + 8.3z + 1.6z
Add them
= 9.8x + 0.1y + 9.9z
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