Solve for d
d=12
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5d-8=4d+4
Multiply both sides of the equation by 4.
5d-8-4d=4
Subtract 4d from both sides.
d-8=4
Combine 5d and -4d to get d.
d=4+8
Add 8 to both sides.
d=12
Add 4 and 8 to get 12.
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