SOLUTION: Can you please help me? 3d+8= 2d-7 I Did 3d plus 2d because there like terms. Which makes 5d+8=-7? Then i did -7 minus 8 which equals -1 so it becomes 5d=-1? Then 5d divided by

Question 667466: Can you please help me? 3d+8= 2d-7
I Did 3d plus 2d because there like terms. Which makes 5d+8=-7?
Then i did -7 minus 8 which equals -1 so it becomes 5d=-1? Then 5d divided by -1 equals -5?
Am i doing this right? If not can you please help me do it right?

Answer by MathTherapy(10552) (Show Source): You can put this solution on YOUR website!

Can you please help me? 3d+8= 2d-7
I Did 3d plus 2d because there like terms. Which makes 5d+8=-7?
Then i did -7 minus 8 which equals -1 so it becomes 5d=-1? Then 5d divided by -1 equals -5?
Am i doing this right? If not can you please help me do it right?

No, you're not doing it right!!

3d + 8 = 2d - 7
3d - 2d + 8 = - 7 ----- Subtracting 2d to make it 0 on right side, and also subtracting it on left-side

3d - 2d = - 7 - 8 ----- Subtracting 8 to make it 0 on left side, and also subtracting it on right-side

RELATED QUESTIONS
3d+8=2d-7 (answered by rfer)

3d-7 - 3d-2 _____ _____ 2d - 3d... (answered by Cintchr)

3d+8=2d-17 (answered by nerdybill)

whatis... (answered by jim_thompson5910)

2d-8+3d simplifies to (answered by Tatiana_Stebko)

Parantheses in equations: I have tried now about 6 times working on these problems and (answered by venugopalramana)

c^2d^2(d^2+3d-7) (answered by Cintchr)

I am not sure how to solve this: 2d^2 + 3d^2 - 4e^2 - 5e^2 I know (2d^2 + 3d^2) =... (answered by stanbon,rapaljer)

I am having problems with simultaneous equations...and this one really has stumped me can (answered by solver91311)