SOLUTION: i have 3 probloms and they are 2 step equati ons 8=8v-4(v+8), 10(1+3b)=-20 , -5n-8(1+7n)=-8 i hope you can help me thank u so much.

Algebra ->  Equations -> SOLUTION: i have 3 probloms and they are 2 step equati ons 8=8v-4(v+8), 10(1+3b)=-20 , -5n-8(1+7n)=-8 i hope you can help me thank u so much.      Log On


   

Question 237053: i have 3 probloms and they are 2 step equati ons 8=8v-4(v+8), 10(1+3b)=-20 , -5n-8(1+7n)=-8 i hope you can help me thank u so much.
Answer by College Student(505) About Me  (Show Source):
You can put this solution on YOUR website!
8=8v-4(v+8), 10(1+3b)=-20 , -5n-8(1+7n)=-8
8=8v-4%28v%2B8%29
8=8v-4v-32
8%2B32=8v-4v
40=4v
40%2F4=v
v=10
.
10%281%2B3b%29=-20
%2810%2A1%29%2B%2810%2A3b%29=-20
10%2B30b=-20
30b=-20-10
b=-30%2F30
b=-1
.
-5n-8%281%2B7n%29=-8
-5n%2B%28-8%2A1%29%2B%28-8%2A7n%29=-8
-5n-8-56n=-8
-61n=-8%2B8
n=0%2F-61
n=0