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1. x - 10 - 4 = 2x
do i add 4 with -4 and 2x?

add 4 to both sides of the equal sign and tell me what you get

1. x - 10 - 4 = 2x
+4 +4
x-10=2x+4 is it like that?

yes, now keep going

Why not x - 10 - 4 = 2x -> x - 14 = 2x ?

^ that works, too

Then subtract x from both sides

don't worry about that equation as it doesn't have a valid solution
solve the other equation

im still confuse with the first one..

ok, we can pick up where you left off
x-10=2x+4
now add 10 to both sides

x=2x+14 is it like that?

right, now subtract 2x from both sides

x=2x+14
-2x -2x
x=12x

not quite, remember that you can't combine 14 since there's no x attached to it
x - 2x = ?

oh ok so its
x-2x=14-2x

almost
x-2x = 2x+14-2x
now keep going
x - 2x = ?

12

nope
1-2 = ?

-1

right, so if 1-2 = -1, what does x - 2x = ?

-x

correcto, now we have
-x = 2x+14-2x
what is 2x+14-2x?

im not sure

hint: 2x - 2x = ?

good, so what is 2x+14-2x?

not quite...
2x+14-2x = 2x-2x+14 = ?

It may be easier if it's re written as 2x - 2x + 14 = ?

12

nope, not quite..
2x - 2x = 0
2x - 2x + 14 = ?

2x - 2x + 14 => 0 + 14

14

-(x-10) - 4 = 2x

-(x-10) - 4 = 2x
-x+10-4=2x

good, keep going
10-4 = ?

good, that gives us
-x + 6 = 2x
now add x to each side

-x + 6 = 2x
+x +x
-x+6x+2x+x

not quite, remember that you can't combine numbers and variables
-x + x + 6 = 2x + x

now keep going
-x + x + 6 = ?

excellent! now, x + 2x = ?

2x

nope, here's a hint:
1 + 2 = 3
x + 2x = ?

3x

good, now we have
3x = 6
now divide both sides by 3

x=2

ohh ok

so it's x=-14 and x=2