math problem?

Question

I'm having trouble with this problem.::

m-12=3m+4


helP?

Answer 1

First, put all your variables on the left side. To do that, subtract 3m from both sides.

m-3m -12 = 3m-3m + 4
-2m -12 = 4

Then move all your non-variables to the right side. To do this, add 12 to both sides.
-2m -12 + 12 = 4 + 12
-2m = 16

Then divide by negative two, to get:
m = -8.
That's your answer.

Answer 2

You need to combine the like variables - so all the "m"s and the numbers.

So...
m-12 = 3m + 4
You need to bring all the "m"s to one side and the numbers to the other
m - 12 - m = 3m + 4 - m
-12 = 3m - m + 4
-12 = 2m + 4
-12 - 4 = 2m + 4 - 4
-16 = 2m

Then simplify by dividing each side by 2 to find the value of m
-16/2 = 2m/2
-8 = m

To check this answer, plug m=-8 back into the original equation:
m-12 = 3m + 4
(-8) - 12 = 3(-8) + 4
-8 - 12 = -24 + 4
-20 = -20

Answer 3

Put the m's together on one side: (subtract m from each side)

m - 12 - m = 3m + 4 - m => -12 = 2m + 4

Put the numbers on the other side (subtract 4 from each side)

-12 - 4 = 2m + 4 - 4 => -16 = 2m

Make the coefficient of m 1 (divide by 2)

-16/2 = 2m/2 => -8 = m

Start on the next problem.

Answer 4

Hopefully this isnt too confusing


m-12=3m+4
-m -m
-12=2m+4
-4 -4
-16=2m
(divide 2)
m=-8

Hope that helps

Answer 5

1st u add 12 to both sides:
m-12=3m+4
+12 +12
which comes out to be:
m=3m+16
then u subtract 3m from both sides:
m=3m+16
-3m -3m
which is:
-2m=16
which equals:
-8

Answer 6

subtract 4 from both sides which is going to give u this
m - 12 = 3m +4
-4 -4
this is going to give u this
m - 16 = 3m
then subract m from both sides
m - 16 = 3m
-m -m
this is going to give u this
-16 = 2m
then divide by 2
-16/2 = 2m/2
this is going to give u the final answer which is
-8 = m