How do you solve #7x - 2= 3x + 18#?

2 Answers
May 24, 2018

#x=5#

Explanation:

#7x-2=3x+18#

Rearrange the equation putting the numbers on one side and the pronumerals on the other side
#7x-3x=18+2#

Simplify
#4x=20#

Divide both sides by 4
#x=5#

May 24, 2018

#x=5#

Explanation:

Given -

#7x-2=3x+18#

Add #-3x# on both sides

#7x-2-3x=3x+18-3x#
#7x-2-3x=cancel(3x)+18cancel(-3x)#
#4x-2=18#

Add #2# on both sides

#4x-2+2=18+2#
#4xcancel(-2)cancel(+2)=18+2#
#4x=20#

Divide both sides by #4#

#(4x)/4=20/4#
#(cancel4x)/cancel4=20/4#
#x=5#