Answers

2014-04-15T21:23:46+08:00
-2=2+5v+2v
-2-2=7v
-4=7v
-4/7=v


6(6v+6)-5=1+16v
36v=36=1+5+16v
36v-16v=1+5-36
20v=-30
v=-30/20=-3/2


-4k+2(5k-6)=-3k -39
-4k+10k-12=3k-39
-4k+10k-3k=12-39
3k=-27
k=-9


-16+5n=-7(6+8n)+3
-16+42-3=-56n-5n
23=-61n
23/-61=n
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