Answer:
d = -8
Step-by-step explanation:
Isolate the variable, d. Note the equal sign, what you do to one side, you do to the other. Divide -4 from both sides of the equation:

d = -8 is your answer.
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I will try my best are there answers
The error is the proportions are set wrong
Answer:
4a - 104 is the expression simplify all the way
Step-by-step explanation:
4 x a = 4a - 4 x 26 = 104 (4a - 104)