20(7-d)+11d=13

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Solution for 20(7-d)+11d=13 equation: 



20(7-d)+11d=13

We move all terms to the left:

20(7-d)+11d-(13)=0

We add all the numbers together, and all the variables

20(-1d+7)+11d-13=0

We add all the numbers together, and all the variables

11d+20(-1d+7)-13=0

We multiply parentheses

11d-20d+140-13=0

We add all the numbers together, and all the variables

-9d+127=0

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

-9d=-127

d=-127/-9

d=14+1/9

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