Question

agrupacion de terminos
4x+2x-30=
3x+5x-12=
2x+6x-10=
6x-2x-9=
3x-2x-10
-3-3x+10x
-9-3+6x+8x
12x-8x+6

Answer 1

$4x+2x-30$  
$4x+2x=6x$  
$4x+2x-30=6x-30$

$3x+5x-12$
$3x+5x=8x$
$3x+5x-12=8x-12$

$2x+6x-10$
$2x+6x=8x$
$2x+6x-10=8x-10$

$6x-2x-9$
$6x-2x=4x$
$6x-2x-9=4x-9$

$3x-2x-10$
$3x-2x=x$
$3x-2x-10=x-10$

$-3-3x+10x$
$-3x+10x=7x$
$-3-3x+10x=-3+7x$

$-9-3+6x+8x$
$6x+8x=14x$
$-9-3=-12$
$-9-3+6x+8x=14x-12$

$12x-8x+6$
$12x-8x=4x$
$12x-8x+6=4x+6$