Answer:
12x - 15/2
Explanation:
(4x + 1/4) + (8x - 31/4)
4x + 1/4 + 8x - 31/4
4x + 8x
12x + 1/4 - 31/4
1/4 - 31/4
12x -15/2
= 12x + -15/2
4x + 1/4 + 8x + -31/4
(4x+8x) + (1/4 + -31/4)
=12x+ -15/2
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