Question 62385
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5n + 12=2n
-5n+5n+12=2n-5n
12=-3n
12/-3=-3n/-3
-4=n
{{{highlight(n=-4)}}}
Check, if n=-4 does the equation equal.
5(-4)+12=2(-4)
-20+12=-8
-8=-8  Yes. We're right!
:
and
: 
6(x+3)+3x=3(x-2)
6x+18+3x=3x-6
9x+18=3x-6
9x-3x+18=3x-3x-6
6x+18=-6
6x+18-18=-6-18
6x=-24
6x/6=-24/6
{{{highlight(x=-4)}}}
Check, if x=-4 does the equation equal?
6(-4+3)+3(-4)=3(-4-2)
6(-1)-12=3(-6)
-6-12=-18
-18=-18  yes, we're right!
Happy Calculating!!!