How do you solve #-204= - 4- 8( 1+ 3r )#?

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Answer 1 · 2017-11-06T23:58:50

#r=8#

#-204 = -4 -8(1 + 3r)#

Start by using the distributive property

#-204 = -4 + (-8)(1)+(-8)(3r)#

#-204 = -4 -8 -24r#

#-204 = -24r -12#

We always need to make sure that the letter we are solving for is leading the equation. In this case, we need to flip the equation.

#-24r - 12= -204#

Then add #12# to both sides

#-24r - 12 + 12 = -204 + 12#

#-24r = -192#

Finally, divide both sides by #-24#

#(-24r)/-24 = (-192)/(-24)#

#r=8#