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Answer:
-2x + 1
Step-by-step explanation:
1: -3x^2 + 5x + 2 - 1 - 7x + 3x^2
2: (-3x^2 + 3x^2) + (5x - 7x) + (2 - 1)
3: 0 - 2x + 1
4: -2x + 1
Step 1: Given equation
Step 2: Group the terms with similar exponents together
Step 3: Add the terms together
Step 4: Simplify completely