How do you solve #8- 2x = - 7#?

1 Answer
Shantelle
Jun 11, 2018

#x = 7.5 or 7 1/2#

Explanation:

To solve for the variable #x#, we have to make it by itself. To do so, first subtract #color(blue)(8)# from both sides of the equation:
#8 - 2x quadcolor(blue)(-quad8) = -7 quadcolor(blue)(-quad8)#

#-2x = -15#

Now divide both sides by #color(blue)(-2)#:
#(-2x)/color(blue)(-2) = (-15)/color(blue)(-2)#

Therefore,
#x = 7.5 or 7 1/2#

Hope this helps!

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