If #3x-2+5x=2#, what is the value of #3x#?

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Answer 1 · 2018-06-05T01:05:42

#3x = 3/2#

#3x - 2 + 5x = 2#

Before we find the value of #3x#, let's first find the value of #x#.

To do so, first combine #3x + 5x#:
#8x - 2 = 2#

Add #color(blue)2# to both sides of the equation:
#8x - 2 quadcolor(blue)(+quad2) = 2 quadcolor(blue)(+quad2)#

#8x = 4#

Now divide both sides by #color(blue)8#:
#(8x)/color(blue)8 = 4/color(blue)8#

#x = 1/2#

Since we want #3x#, let's multiply that by #color(blue)3#:
#1/2 color(blue)(*3) = 3/2#

Hope this helps!