What is #x# in the equation #7x + 8 = 36#?

Question

2687 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-04-08T07:10:04

see below

We have, #7x+8=36#
Or, #7x=36-8#
Or, #x=28//7#
Thus, #x# comes out as #4#.

Answer 2 · 2018-04-08T07:46:19

#x=4#

In order to find the value of #x#, you have to isolate the #x#-term on the left.

#color(blue)(7x) + 8 = 36 #

Subtract #8# from both sides of the equation.

#color(blue)(7x) + 8 color(magenta)(-8) = 36 color(magenta)(-8)#

#" "color(blue)(7x) = 28 #

Now divide both sides by #7# to get just #x# on the left.

#" "color(blue)(7x)/7 = 28/7 #

#" "color(blue)(x) = 4 #