SOLUTION: Use the elimination method to solve the system. .18f-.3g=3 .15g-.9f=-5.55

Algebra ->  College  -> Linear Algebra -> SOLUTION: Use the elimination method to solve the system. .18f-.3g=3 .15g-.9f=-5.55      Log On


   

Question 160699: Use the elimination method to solve the system.
.18f-.3g=3
.15g-.9f=-5.55
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
.18f-.3g=3
.15g-.9f=-5.55 multiply this equation by 2 & add them.
.3g-1.8f=-11.1
-.3g+.18f=3
----------------------------
0g-1.62f=-8.1
f=-8.1/-1.62
f=5 answer.
.15g-.9*5=-5.55
.15g-4.5=-5.55
.15g=-5.55+4.5
.15g=-1.05
g=-1.05/.15
g=-7 answer.