Answer:
7/10x -5y + 1
Explanation:
2/5x + 3/10x + 3y - 8y + 1
convert 2/5x into 10ths
4/10x +3/10x + 3y - 8y + 1
7/10x +3y - 8y + 1
7/10x - 5y + 1
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