Question

x+8/7 - x+3/7

Answer 1

Get the variable by itself

7x - 3 = 18
7x = 18 + 3
7x = 21
x = 3

Answer 2

how did you get 7x-3=18?

Answer 3

subtract and write in simplest form.

Answer 4

yeah

Answer 5

I am confused :/

Answer 6

don't be confused just do what i did there am sure of it

Answer 7

But i dont understand how you got that.

Answer 8

can you use the equation editor, or put in parens?
is it
\[\frac{x+8}{7} - \frac{x+3}{7} \]

Answer 9

yeah thats the equation

Answer 10

you are subtracting 2 fractions that have the same denominator.
subtract the tops, and keep the same denominator

the top is (x+8) - (x+3)
the bottom is 7

can you do (x+8) - (x+3)

Answer 11

remember -(x+3) is the same as -1*(x+3)
distribute the -1 by multiplying each term inside the parens by -1

Answer 12

so (x+8)(x-3)?

Answer 13

so (x+8)(x-3)?
that means multiply
you want
(x+8) - (x+3)

the first step is get rid of the parens. the ones around (x+8) we can ignore:
x+8 -(x+3)

to get rid of parens in -(x+3)
remember -(x+3) is the same as -1*(x+3)
distribute the -1 by multiplying each term inside the parens by -1

Answer 14

so would it equal 5 on top?

Answer 15

how did you get it?

Answer 16

by subtracting x+8 and x-3

Answer 17

you mean subtracting x+8 - (x+3) right?

x+8-(x+3)= x+8-x-3= x-x + 8-3= 0+5= 5
yes

so the answer is
\[ \frac{5}{7} \]

Answer 18

okay i understand thank you :)