The given expression is (4d - 3) + (12d + 4).
To simplify the expression, we first remove the parentheses:
4d - 3 + 12d + 4.
Combine like terms:
(4d + 12d) + (-3 + 4) =
16d + 1.
Therefore, (4d - 3) + (12d + 4) simplifies to 16d + 1.
Add: (4d−3)+(12d+4) .
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