#4**+5 **

hi Melody,

**{rll...} is the alignment.**

1. Field **r **(**r**ight-alignment) bevor first "&"

2. Field **l **(**l**eft-alignment) after first "&"

3. Field **l **(**l**eft-alignment) after second "&"

and so on...

**r **= **r**ight alignment

**c **= **c**enter alignment

**l **= **l**eft alignment

I hope, I could help you

heureka

heureka
May 21, 2014

#1**+5 **

$$5=11+2(x-1)\\

5-11=11+2(x-1)-11\\

-6=2x-2\\

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

-4=2x\\

-4/2=x\\

x=-2$$

Melody
May 21, 2014

#2**+5 **

5=11+2(x-1) x?

$$\begin{array}{rll}

5&=&11+2(x-1)\quad | \quad -11\\

5-11&=& 2(x-1)\\

-6&=& 2(x-1)\quad | \quad :2\\

-\frac{6}{2}&=& (x-1)\\

-3&=& x-1\quad | \quad +1\\

-3+1&=& x\\

-2&=& x\\

\end{array} \\

\boxed{x=-2}\\$$

Latex Code:

\begin{array}{rll}

5&=&11+2(x-1)\quad | \quad -11\\

5-11&=& 2(x-1)\\

-6&=& 2(x-1)\quad | \quad :2\\

-\frac{6}{2}&=& (x-1)\\

-3&=& x-1\quad | \quad +1\\

-3+1&=& x\\

-2&=& x\\

\end{array} \\

\boxed{x=-2}\\

Proof:

$$\begin{array}{rll}

5&=&11+2*(\textcolor[rgb]{1,0,0}{-2}-1)\\

5&=&11+2*(-3)\\

5&=&11-2*3\\

5&=&11-6\\

5&=&5\\

\end{array} \\$$

Latex code:

\begin{array}{rll}

5&=&11+2*(\textcolor[rgb]{1,0,0}{-2}-1)\\

5&=&11+2*(-3)\\

5&=&11-2*3\\

5&=&11-6\\

5&=&5\\

\end{array} \\

heureka
May 21, 2014

#3**0 **

hi Heureka,

I have only done this type of setting out with equarray.

but i haven't been able to get equarray to work on this forum.

Thankyou for showing me how I can do it with array.

I don't quite understand what {rll}stands for.

Can you explain please?

I think I will try equarray again and see if I can get it to work. I tried again - it still doesn't work.

Melody
May 21, 2014

#4**+5 **

Best Answer

hi Melody,

**{rll...} is the alignment.**

1. Field **r **(**r**ight-alignment) bevor first "&"

2. Field **l **(**l**eft-alignment) after first "&"

3. Field **l **(**l**eft-alignment) after second "&"

and so on...

**r **= **r**ight alignment

**c **= **c**enter alignment

**l **= **l**eft alignment

I hope, I could help you

heureka

heureka
May 21, 2014