Math Problem -_-

puppyloverlauren • 25 September 2012 at 8:05 PM

I need help, there is this one question that is hard for me. I am in Algebra and here is the problem

b+c=10/a (10 over a) solve for a

please ping me how to the steps!

twilight_raptor • 25 September 2012 at 8:06 PM

b+c= 10/a

a(b+c)= 10

a= 10/(b+c)

get how I obtained the answer? 😸
a detailed one:

b+c= 10/a
(multiply a on both sides to cancel it out on the right)

a(b+c)= (10/a) x a
(a is canceled out and: ...)

a(b+c)= 10
(now isolate a by dividing both sides by (b+c) which would cancel (b+c) out on the left)

(a(b+c))/(b+c) = 10/(b+c)
((b+c) cancels out and..)

a= 10/(b+c)

puppyloverlauren • 25 September 2012 at 8:08 PM

how do you get the third step?
@twilight_raptor

twilight_raptor • 25 September 2012 at 8:11 PM

@puppyloverlauren edited my first post ^^

ladybugheart • 25 September 2012 at 8:11 PM

I'll try it out. o_o

b+c=10/a

So, I believe you're supposed to multiply both sides by 1/10 (the reciprocal of 10) to cancel out the 10.

1/10 (b+c) = a

Then, use the distributive property. I'll change 1/10 to a decimal because it's easier for me.

.1b +.1c = a

I believe that's the answer, but don't blame me if it's wrong. xD

meixiaotian • 25 September 2012 at 8:17 PM

b+c=10/a
Then I multiplied both sides by 10.
So 10(b+c)=a
So, as another different answer,
10b+10c=a

Have fun figuring out the real answer. XD

2-dgorillaz • 25 September 2012 at 8:24 PM

HOLY MOTHER OF GOD WHAT IS THIS!!!!!!????

twilight_raptor • 25 September 2012 at 8:41 PM

@ladybugheart when you cancel 10 out on one side by multiplying 1/10 on both sided you get:

(b+c)/10= 1/a


@meixiaotian

multiplying both sides by 10 wont work (:

(b+c)=10/a

10(b+c)= (10/a) x10

10(b+c) = 100/a

that goes the wrong way...

puppyloverlauren • 25 September 2012 at 10:24 PM

@twilight_raptor

thank you! ahh this lesson is soo hard thank you for telling and explaing this to me!

twilight_raptor • 26 September 2012 at 11:44 AM

@puppyloverlauren no problem 😊 glad you understand 😸

puppyloverlauren • 26 September 2012 at 6:36 PM

@twilight_raptor 😊