3(d+13)=90

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Solution for 3(d+13)=90 equation: 



3(d+13)=90

We move all terms to the left:

3(d+13)-(90)=0

We multiply parentheses

3d+39-90=0

We add all the numbers together, and all the variables

3d-51=0

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

3d=51

d=51/3

d=17

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