7d+23=-40

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Solution for 7d+23=-40 equation: 



7d+23=-40

We move all terms to the left:

7d+23-(-40)=0

We add all the numbers together, and all the variables

7d+63=0

We move all terms containing d to the left, all other terms to the right

7d=-63

d=-63/7

d=-9

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