Answer:
12x, 6x+6x for row one
8*1+8×9y, 8+72y for row two
Explanation:
10x-4x is 6x, because they're like terms. 6x+6x=12x
Using the Distributive Property, 8(1+9y)=
(8*1)+(8*9y)
=
8+72y
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