Math Check
posted by Justine
Can you please see if you got the same answer as I did? Thank you.
3/x + 2/x4
3x12=2x
subtract 3x from both sides you get 12=1x divide by 1 final answer is 12.

Reiny
yes, the solution to 3x12=2x
is x = 12
but ...
how did 3/x + 2/x4
magically turn into the equation
3x12=2x ???? 
Justine
I multiplied each fraction by (x)(x4)

Reiny
you must have had
3/x = 2(x4)
crossmultiplying would have given you
3x  12 = 2x
ok, looks like a simple typo. 
j
3/x+ 2/x4 = 3(x4)+ 2(x)=0
3x12+2x=0
3x+2x=12
5x=12
x=125
x=7
or only if you cross multiply the 3*x4 which is 3x12 and put it equal to 2*x which is 2x that could work.
Respond to this Question
Similar Questions

math
how do you solve 9x=6 9x=6 Divide both side by 9. (Remember you can add, subtract, multiply, etc but do to both sides what you do to one.) 9x/9 = 6/9 The 9's divide out on the left leaving x. x = 6/9. I will let you reduce the answer. … 
math
can anyone help me with these 3 problems I am trying to check my daughters hoime work it has bee na few years. 1. The sum of n and twenty two, multiplied by three, is 78 2. the product of z and 17 is less than or equal to the difference … 
math
24= 2(b3)+8 I suppose you want to solve 24= 2(b3)+8 for b, am I right? 
math,correction
can someone correct these for me i'll appreciate it thank. dirctions: solve 3x7=2x+8 my answer: x = 15 directions: solve 2/5x=10 my answer: x = 25 Directions: solve 3(x+1)=2(x8)+3 my answer: x= 3.2 1 looks ok. Show your work … 
Pre Cal
6x=2x+9 If you are to solve the equation for x, first try to get the variable on one side of the equation. Let's subtract 2x from both sides to start (whatever operation you do to one side of an equation you must do to the other side … 
Maths ..Equations
Hi I have to rearrnge the following to make y the subject.. x = 3  2y / 6 I get the first part do x 3,  2, and / 6. Undo x 6, + 2, and / 3 then multiply by 6 so, 6x = 3  2y add 2 to both sides, 6x + 2 = 3 the divide both sides by … 
Algebra
2(0.53y) + y > (4y0.2)8 I understand how to solve the problem, but my final answer was y < 17/155, which I have a strange feeling isn't right. Maybe I tripped up somewhere. Here's my work: After distributing: 16+y>32y1.6 … 
Algebra
Could someone check this equation for me please.I have added the steps I have done so far. 7x +9 = 5x5 subtract 5x from both sides and simplify 2x+9=5 subtract 9 from both sides 2x=4 divide by 2 x=2 Thought I had done it right but … 
Math  Please Check My Answers
Please help me by checking the following answers for me(There are 3 problems that I need someone to check). 3. A student is attempting to solve the equation below for the variable x. Which of the statements below best applies to the … 
math
When you are solving inequalities, when does the sign change and when does it not?