# Homework help-Algebra problems?!

Question: Homework help-Algebra problems?
-1=b/4-7
&
x/6+4=15
They may seem really easy to most people but i'm TERRIBLE at math :/

Answers:

question one: -1=b/4-7
you must simplify the denominator that is 4-7 which is 3, then you will get -1=b/3, then cross multiply that is 3*-1 you will get -3 and therefore your answer is -3.

question two: x/6+4=15
you do the same, simplify the denominator then find your answer, 6+4=10, then cross multiply 10*15=150 therefore x=150.

hope i helped you

I'm not sure which problem you have here b/c you forgot to use parenthesis

It could be:
-1 = (b/4) - 7
or
-1 = b/(4-7)

The second one has the same issue without the parenthesis

It could be:
(x/6) + 4 = 15
or
x/(6+4) = 15

If you put the parenthesis in we can answer them for you. I'll check back in later.

EDIT* I'll solve these equations the two different ways and you can use which one it was meant to be.

-1 = (b/4) -7; add 7 to each side
-1 + 7 = (b/4) - 7 + 7; simplify
6 = b/4; times both sides by 4
6 * 4 = (b/4)*4; simplify
24 = b <------------Answer

-1 = b/(4-7); subtract first
-1 = (b/-3); times both sides by -3
-1*(-3) = (b/-3)*-3; simplify
3 = b; switch it around
b = 3 <-----------Answer

(x/6) + 4 = 15; subtract 4 from both sides
(x/6) + 4 - 4 = 15 - 4; simplify
(x/6) = 11; times both sides by 6
(x/6)*6 = 11 * 6; simplify & solve
x = 66 <-----------Answer

x/(6 + 4) = 15; add
x/10 = 15; times both sides by 10
(x/10)*10 = 15*10; simplify & solve
x = 150 <---------Answer

Blessings

The consumer Foods information on foodaq.com is for informational purposes only and is not a substitute for medical advice or treatment for any medical conditions.
The answer content post by the user, if contains the copyright content please contact us, we will immediately remove it.
Copyright © 2007 FoodAQ - Terms of Use - Contact us - Privacy Policy