-8+2(1+2.5d)=-18.5

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Solution for -8+2(1+2.5d)=-18.5 equation: 



-8+2(1+2.5d)=-18.5

We move all terms to the left:

-8+2(1+2.5d)-(-18.5)=0

We add all the numbers together, and all the variables

2(2.5d+1)-8-(-18.5)=0

We add all the numbers together, and all the variables

2(2.5d+1)+10.5=0

We multiply parentheses

4d+2+10.5=0

We add all the numbers together, and all the variables

4d+12.5=0

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

4d=-12.5

d=-12.5/4

d=-3+0.5/4

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