1. 2(4x+y) - 7x
= 8x + 2y - 7x
= x + 2y
2. 8a - 5b - 3(a - 4b)
= 8a - 5b - 3a - 12b
= 5a + 7b
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1. 2(4x+y) - 7x
= 8x + 2y - 7x
= x + 2y
2. 8a - 5b - 3(a - 4b)
= 8a - 5b - 3a - 12b
= 5a + 7b