How to write a justification for Line 2, Line 3, and Line 4? Explain why you chose each justification. Line 1 5x – 2 = 3x + 7 Line 2 2x – 2 = 7 Line 3 2x = 9 Line 4 x = 4.5

1 Answer
Oct 9, 2015

Answer:

See Explanation (below) for Justification of each derived line

Explanation:

Line 1:#color(white)("XXX") 5x – 2 = 3x + 7#

#color(white)("XXXXXXXX")#Subtract #3x# from both sides of Line 1
Line 2:#color(white)("XXX")2x – 2 = 7 #

#color(white)("XXXXXXXX")#Add #2# to both sides of Line 2
Line 3:#color(white)("XXX")2x = 9 #

#color(white)("XXXXXXXX")#Divide both sides of Line 3 by #2#
Line 4:#color(white)("XXX")x = 4.5#