Question

15x-10/5= what

Answer 1

can someone help me

Answer 2

is this
\[ \frac{15x-10}{5}= \]
?

Answer 3

yes

Answer 4

you should put parens in like this
(15x-10)/5 =

because the way you wrote it means
\[ 15x - \frac{10}{5} =\]
which is a different question.

Answer 5

but for your question
you know that when you add or subtract fractions, you need a common denominator, right?

\[ \frac{15x}{5} - \frac{10}{5} = \frac{15x-10}{5} \]
so you can "undo" this fraction and write it as shown on the left:
\[ \frac{15x}{5} - \frac{10}{5} = \]
can you simplify these fractions?

Answer 6

no

Answer 7

OK, look at the first fraction
\[ \frac{15x}{5} = \frac{15}{5}\cdot \frac{x}{1}=\frac{15}{5}\cdot x \]
those all mean the same thing.
can you simplify the last version
\[ \frac{15}{5} \cdot x \]

Answer 8

3

Answer 9

almost. 15/5 is 3
but then you multiply by x (x is a number, you just don't know its value)
to multiply 3*x you write 3*x or just 3x

so
\[ \frac{15}{5} \cdot x= 3x \]
now simplify the other fraction
\[ \frac{-10}{5} \]

Answer 10

0.5

Answer 11

how many times does 5 go into 10?

Answer 12

2

Answer 13

but notice it is -10 so the answer is -2
(because -2*5= -10)

so the answer is
\[ \frac{15x-10}{5}=3x-2 \]

Answer 14

thanks

Answer 15

Do you see what we did? we divided 5 into 15x (and got 3x) and divided 5 into -10 and got -2, so the answer is 3x-2

Answer 16

yes