Question

-(15+5/2a)+12=17

Answer 1

-15 + 5/2 a + 12 = 17 Combine like terms.
-12 -12
-----------------------
-27 + 5/2a = 17 Add 27 to both sides.
+27 +27
----------------------
5/2a = 44 Now divide by the fraction.

I got 17.6. Let me know if you need that in a fraction form

Answer 2

fraction form pls teacher doesnt want decimals

Answer 3

it is 17 6/10 Hope this helped!!

Answer 4

thanks a bunch ;)

Answer 5

no problem!

Answer 6

peachy do u have a different answer?

Answer 7

I don't agree with sue101. -15 -5/2a +12 = 17
Combine like terms: -3 -5/2a =17
Add 3 to both sides -5/2a =20
Multiply both sides by 2a -5 =40a
Multiply both sides by 1/40 -5/40 =a
Reduce fraction -1/8 =a
a =-1/8

Answer 8

after i started looking at how she solved it , i thought it was odd too

Answer 9

Yeah, she started by adding -24 to only one side of the equation, which wouldn't balance it.

Answer 10

yeah i saw that also and she didnt make 5/2 a negative either

Answer 11

If you plug -1/8 in for a you can see that your equation balances. Try plugging it in and see how you do.

Answer 12

but why -1/8 and not just -8? after multiplying each side by two wouldnt that just be -5a=40?

Answer 13

Here's how it should look: -(15 + 5/2a) + 12 = 17
Distribute the "-" and drop the parentheses: -15 -5/2a + 12 = 17
Now I'll plug in the -1/8 for "a" \[-15 + \frac{ 5 }{ 2(\frac{ 1 }{ 8 })}+12=17\]

Answer 14

Then, you need to do this: \[-15+\frac{ 5 }{ \frac{ 1 }{ 4 } }+12=17\]
Don't forget to invert the 1/4 , and multiply it by 5 to get your answer.

Answer 15

thanks for the help , its still kinda fuzzy to understand but I will keep practicing .