2.5-5(1+4d)=-25.5

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Solution for 2.5-5(1+4d)=-25.5 equation: 



2.5-5(1+4d)=-25.5

We move all terms to the left:

2.5-5(1+4d)-(-25.5)=0

We add all the numbers together, and all the variables

-5(4d+1)+2.5-(-25.5)=0

We add all the numbers together, and all the variables

-5(4d+1)+28=0

We multiply parentheses

-20d-5+28=0

We add all the numbers together, and all the variables

-20d+23=0

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

-20d=-23

d=-23/-20

d=1+3/20

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