How do you solve #175= - 7( - 1+ 3v )#?

1 Answer
Sep 21, 2017

Answer:

#v=-8#

Explanation:

#175=-7(-1+3v)#
Let start by distributing the right side
#175 = (-7)(-1)+(-7)(3v)#
#175 = 7 - 21v#
We always want to make sure we put the variable we are solving in front(leading the equation). For that, we Flip the equation
#-21v + 7 = 175#
Group the common term
#21v = 175 - 7#
#21v = 168#
Finally, divide both sides by #color(red)(-21)#
#(-21v)/color(red)(-21) = 168/color(red)(-21)#
#v= -8#