SOLUTION: for problems 5 and 6 solve the system of equations using substitution to eliminate one variable. if the system has no solution, indicate thaqt it is inconsistent. if it has infini

Question 240704: for problems 5 and 6 solve the system of equations using substitution to eliminate one variable. if the system has no solution, indicate thaqt it is inconsistent. if it has infinite solutions, indicate that it is dependent. if the system has a solution, check your answer.
y=2x
3x+y=20
check (if possible)
please please please help!!!!!!!!!!!!!!!!
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
y=2x
3x+y=20
Sub for y into the 2nd eqn
3x+2x = 20
5x = 20
x = 4
--------
y = 8

RELATED QUESTIONS
for problems 5 and 6 solve the system of equations using substitution to eliminate one... (answered by Alan3354)

For problems 5 and 6, solve the system of equations using SUBSTITUTION to eliminate one... (answered by ankor@dixie-net.com)

Solve the following systems of equations using SUBSTITUTION to eliminate one variable.... (answered by Alan3354)

for problems 7-9 solve the system of equations using addition to eliminate one variable.... (answered by Stitch)

please help. solve the following systems of equations using substitution to eliminate... (answered by mananth)

for problems 7-9 solve the system of equations using addition to eliminate one variable.... (answered by dabanfield)

I have to solve a system of equations using substitution to eliminate one variable for... (answered by lwsshak3)

For problems 7 and 9, solve the system of equations using ADDITION to eliminate one... (answered by mathtutor19)

For problems 7 through 9, solve the system of equations using ADDITION to eliminate one... (answered by Jk22)