How can I show work for 4x = 3x + 4? I know it = 4, but how do I show the work from this?Also I don't understand this: If your birthday is May 2nd and your area code is 804 you would use 2 for the...

How can I show work for 4x = 3x + 4? I know it = 4, but how do I show the work from this?

Also I don't understand this:

If your birthday is May 2nd and your area code is 804 you would use 2 for the numerator and 80 for the denominator, the resulting fraction being 2/80. One equivalent fraction could be found by dividing the numerator and denominator by 2 to get 1/40. Another could be found by multiplying both by 5 to get 10/400.

My area code is 201 and my birthday is July 4.

Expert Answers
hala718 eNotes educator| Certified Educator

4x = 3x + 4

What you need to do first if group like terms, that means that we need to combine terms with x together and consant terms togther:

To do so, we need to group 4x and 3x by moving 3x to the left side.

To move 3x we will subtract 3x from both sides:

==> 4x - 3x = 3x + 4 -3x

You notice that 3x will be eliminated from right sides. And for the left side we will get x

==> x = 4

neela | Student

To  find x.

4x = 3x+4

 Subtract 3x from both sides:

4x-3x = 3x+4-3x

x = 3x-3x+4

x = 4.

To make some fractions:

Since the numerator has the data from bday,  your bday = juy4.

So numerator = 4.

Denomonator has its data from the first two digits (as shown in your example) of your location code which is 201.

So the fraction is 4/20 = 2/10 an equavalent fraction = 1/10 another equivalent proper fraction which cannot be further reduced.

Also 4/20 = 4*5/20*5 = 20/100  is also an equivalent fraction.