-15+(2d-1)=7.5

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Solution for -15+(2d-1)=7.5 equation: 



-15+(2d-1)=7.5

We move all terms to the left:

-15+(2d-1)-(7.5)=0

We add all the numbers together, and all the variables

(2d-1)-22.5=0

We get rid of parentheses

2d-1-22.5=0

We add all the numbers together, and all the variables

2d-23.5=0

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

2d=23.5

d=23.5/2

d=11+1/1.3333333333333

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