16 = -d + 6

- anonymous

16 = -d + 6

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- kewlgeek555

I am not sure...I think it would still be 10...

- kewlgeek555

But tha negative sign confuses.

- kewlgeek555

No negative number plus six will get to sixteen.

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## More answers

- petiteme

transpose 6 to the other side
so
-6 + 16 = -d
Add like terms
10 = -d
d=-10 :)

- anonymous

thanks can u help with another ??

- kewlgeek555

I might be able to.

- anonymous

b - 3 over -5 = -15

- kewlgeek555

So is this what you are asking?:\[\frac{ b-3 }{ -5 }=-15\]

- anonymous

yes

- kewlgeek555

Okay, so really this is the same thing as being this:\[(b-3)\div-5=-15\]Now, like I said before - you have to work backwards. Do PEMDAS backwards. SADMEP. So if you do it correctly, it would come out b=78

- anonymous

ok can u explain the steps ?

- kewlgeek555

This is what I did:
(-15 * -5) + 3 = b = 78

- kewlgeek555

Or, if you want to me to be more specific:
(b - 3) / -5 = -15
(-15 * -5) + 3 = b
75 + 3 = b
78 = b

- anonymous

Thanks ! -10 = 5 + z over -5

- kewlgeek555

\[-10=\frac{ 5+2 }{ 5 }\]\[-10=(5+2)\div5\]\[(-10\times5)-5\]\[-50-5\]\[z=-55\]

- anonymous

13 = -8p - 3 + 9p

- kewlgeek555

I got 16, but based on my special calculator it is 4, so the answer is 4.

- anonymous

Can u explain the steps

- kewlgeek555

I can't because when I tried to do it I actually did it wrong and checked my work with my special calculator and it said I was wrong so...let me see.

- anonymous

ok

- kewlgeek555

Yeah, I can't seem to figure out how I got that one wrong. :-/

- anonymous

I'm thinking I have to multiply -8p and 9p since they are like terms

- anonymous

then it becomes 13 = -7 - 3
and then -72 - 3
which becomes -75
then multiply 13 and -75
giving me -975
hmm that seems way too high

- kewlgeek555

This is what I thought:
13 = -8p - 3 + 9p
I combine the like terms, which are -8p and 9p by adding 9 to -8 (because you always keep the sign before the number with the number), making the equation 13 = 1p - 3.
From there I go to (13 + 3) / 1
Then 16 / 1
And 16 = p

- kewlgeek555

But based on my calculator I am wrong.

- kewlgeek555

But hey, if you have to show your work then if you put that then you'll be at least get 50% credit for trying to solve.

- anonymous

http://www.geteasysolution.com/13=-9p+13+9p

- anonymous

Simplifying
13 = -9p + 13 + 9p
Reorder the terms:
13 = 13 + -9p + 9p
Combine like terms: -9p + 9p = 0
13 = 13 + 0
13 = 13
Add '-13' to each side of the equation.
13 + -13 = 13 + -13
Combine like terms: 13 + -13 = 0
0 = 13 + -13
Combine like terms: 13 + -13 = 0
0 = 0
Solving
0 = 0
Couldn't find a variable to solve for.
This equation is an identity, all real numbers are solutions

- anonymous

that's probably why you're getting two different answers

- kewlgeek555

Wow. I am actually about to leave my computer. Let me try my fastest.
Okay, instead of 13 = 13 + 9p + 9p, I would do 13 = 9p + 9p + 13. Anywho, the next step would be combining like terms which would be -9 + 9 = 0p. 13 = 0p + 13. 13 - 13 = 0. 0 / 0 = p = ERROR.

- kewlgeek555

Hm...I don't know. @campbell_st @savannaxx_ @Firejay5 might help. Let me check my special calculator.

- anonymous

yeaa that's why. k thanks for the help

- kewlgeek555

Oh. So you are actually right. P = Always true, or all real numbers.

- kewlgeek555

You are very welcome.

- Firejay5

Thanks ! -10 = 5 + z over -5, the answer is actually 45 not -55

- anonymous

Actually no. since it's a negative 55 u would do the opposite and add not subtract.

- Firejay5

no it's wrong \[\frac{ z + 5 }{ -5 } = -10\]

- Firejay5

you have to multiply -5 to both sides to cancel out the denominator -10 * -5 = 50; then you have z + 5 = 50; substract 5 from both sides and you get z = 45

- Firejay5

13 = -8p - 3 + 9p = x = 16

- anonymous

actually the -10 is on the other side. whatever u say

- Firejay5

It's better for me to organize my variables

- Firejay5

either way you change it's still correct, but it's just switched

- Firejay5

I did this stuff in Algebra II you have to get the denominator to cancel out by multiplying

- Firejay5

plug -55 back into the regular equation and you will get 10 not -10

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