7d+1=1-2(5-d)

Solution for 7d+1=1-2(5-d) equation:

7d+1=1-2(5-d)

We move all terms to the left:

7d+1-(1-2(5-d))=0

We add all the numbers together, and all the variables

7d-(1-2(-1d+5))+1=0


We calculate terms in parentheses: -(1-2(-1d+5)), so:

1-2(-1d+5)

determiningTheFunctionDomain
-2(-1d+5)+1

We multiply parentheses

2d-10+1

We add all the numbers together, and all the variables

2d-9

Back to the equation:

-(2d-9)


We get rid of parentheses

7d-2d+9+1=0

We add all the numbers together, and all the variables

5d+10=0

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

5d=-10

d=-10/5

d=-2