# 2(4d +4)=d +1I'm trying help my daughter with her math... this is the last one im stuck on. Please help.

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### 7 Answers

Begin by using the Distributive Property on the left side.

2(4d + 4) = d + 1

8d + 8 = d + 1

Next subtract d from both sides.

7d + 8 = 1

Next, subtract 8 from both sides.

7d = -7

Finally, divide both sides by 7.

**d = -1**

Distribute the 2 into the 4d and 4.

8d+8=d+1

Combine like terms

7d=-7

Divide 7 to isolate x.

d=-1

2(4d +4)=d +1

8d + 8 = d+1

8d - d = 1 - 8

7d = -7

d = -1

2(4d +4)=d +1

First use the distributive property

8d + 8 = d+1

combine like terms by moving the terms that look alike to the same side

8d - d = 1 - 8

7d = -7

divide by 7 because we are trying to solve b

`(7d) / 7 = -7/7`

d = -1

Distribute first so 8d +8 = d + 1

next subract d from both sides so now 7d + 8 = 1

next subract 8 from both sides so now 7d = -7

last divide both sides by 7 and get d = -1.

- First, multiply the 2 into the equation on the left hand side

2(4d + 4) = d + 1

becomes

2*4*d + 2*4 = d + 1

8d + 8 = d + 1

- next, subtract the 1 from (d + 1) both sides

8d + 8 = d + 1

- 8 - 8

8d = d - 7

- then, subtract the d on the right hand side from both sides

8d = d - 7

-d -d

you are left with 7d = -7

- divide both sides by 7 to be left with just d

7d/7 = d

-7/7 = -1

- and you are left with
**d = -1**

Thank you! I ended up doing it the hard way. I never thought I would have to do algebre again :)

8d+8=d+1

8d+8-d=1

7d+8=1

7d=-8+1

7d=-7

7d/7=-7/7

d=-7/7

d=-1

Thanks again, love this site!