Question

Solve for the variable in the equation.

5x/7-1/14=9/28

Answer 1

start celaring fracions by multiplying thru by the smallest one

Answer 2

clearing that is

Answer 3

that method is self simplifying

Answer 4

So like starting with 1 over 14 first and multiply it by what?

Answer 5

7 14 and 28; start by multiplying it all by 7, then simplify the rest and pick the next smallest denom

Answer 6

Im not sure i quite understand.

Answer 7

\[\frac{5x}{7}-\frac{1}{14}=\frac{9}{28}\]
\[\frac{5x(7)}{7}-\frac{1(7)}{14}=\frac{9(7)}{28}\]
\[5x-\frac{1}{2}=\frac{9}{4}\]
\[(2)5x-\frac{1(2)}{2}=\frac{9(2)}{4}\]
\[10x-1=\frac{9}{2}\]
\[10(2)x-1(2)=\frac{9(2)}{2}\]
\[20x-2=9\]

Answer 8

So would that be 9/14?

Answer 9

maybe, 11/20 tho might be better

Answer 10

Oh haha i feel stupid lolz thanks your really smart, are you a student or an adult?

Answer 11

im a student AND an adult .... getting my BA in math

Answer 12

Wow good job;) I missed a month of school due to a car crash. And i havent been able to attend and now i dont get anything so i have a ton more questions that still need to be asked

Answer 13

well, post them up on the left, one at a time so that they can be studied thru ... :)

even if the intent is to get an answer, the studying part helps to solidify some of the concepts hopefully

Answer 14

and if anyone ever just spouts out an answer, ask for proof cause they could be mistaken ;)

Answer 15

Haha yeah, im glad you dont just tell me the answer to be perfectly honest with you, the people the other day and some of last night would just spout out answers to me and no one would talk me through it so i had no idea of what i was doing...but thanks:)

Answer 16

Thanks for the medal:)