Step-by-step explanation:
16d-4+5d= -67
21d-4= -67
21d= -67+4
d= -63/21
d = -3
hope it helps
Answer: d = -3
Step-by-step explanation:
⇒16d -(4-5d) = -67
⇒16d -4 +5d = -67
⇒21d = -67+4
⇒21d = -63
⇒d = -63/21
⇒d = -3
Therefore d = -3
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