plzzz help!!!!!!!!!!!!! math problem / wiskunde probleem

i don't get this.

here is the example for it but i don't get it :
example 1 : http://i37.tinypic.com/adj1uq.jpg
example 2 : http://i38.tinypic.com/ehj6vl.jpg.

and this is what i must make :
http://i38.tinypic.com/20tjwqu.jpg.

Can someone explain this to me.

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Dutch:
Ik snap dit niet.

hier is een voorbeeld maar ik snap die niet:
example 1 : http://i37.tinypic.com/adj1uq.jpg
example 2 : http://i38.tinypic.com/ehj6vl.jpg

en dit is wat ik moet maken :
http://i38.tinypic.com/20tjwqu.jpg

kan iemand dit uitleggen.

What part dont u understand?all are simple probs,and instead of decimal point"." a "," has been used.Wat do u mean by this is wat i must make?????

not quit hard what class are you?

The first One
7X -15= 5X +5
2X -15= +5
2X = 20
X = 10

The second one
-3X +18 = X +26
-4X +18 = +26
-4X = 8
X = -2

so, when u take a number, to the other side of the = , it changes its "+" to "-". Then, if u have like 4x = 8
u have to put the 4, below the 8, like this
X= 8/4
X= 2
hope u understood!!!

thank you pancho98 !!

srry i mean pancho93

lol... i studied it more than 4 years ago i think, and im 16 years.. uhhhh

cyaa and good luck with maths.

Looks like we have got some young mathematicians here? :-P

I'm 15
lol