Question #a3b6e

3 Answers
Oct 3, 2017

#x = 15#

Explanation:

#-3x+57=x-3#

Take the terms with variable #x# on left hand side of the equation and bring the others on right hand side:

Apply transposition method:

#-3x-x=-3-57#

#-4x = -60#

Dividing both sides by #-4#:

#x = 15#

Oct 3, 2017

add 3 to both sides:

#-3x+60=x#

...then add 3x to both sides:

#60 = 4x#

divide each side by 4:

#15 = x#

BAM.

GOOD LUCK!

Oct 3, 2017

#x=15#

Explanation:

First we subtract #57# from both sides.
#-3x+57color(blue)-color(blue)57=x-3color(blue)-color(blue)57#
Therefore, #-3x=x-60#.

Subtract #x# from both sides:
#-3xcolor(blue)-color(blue)x=x-60color(blue)-color(blue)x and therefore, #-4x=-60#. Divide both sides by #-4#:

#(-4x)/(-4)=(-60)/(-4)#

Simplify:
#x=15#