SOLUTION: Use substitution to solve each system of equations. If the system does NOT have exactly one solution, state whether it has NO solutions, or INFINITELY MANY solutions.
1.) y=7-x
Algebra.Com
Question 396392: Use substitution to solve each system of equations. If the system does NOT have exactly one solution, state whether it has NO solutions, or INFINITELY MANY solutions.
1.) y=7-x
2x-y=8
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Use substitution to solve each system of equations. If the system does NOT have exactly one solution, state whether it has NO solutions, or INFINITELY MANY solutions.
1.)
y=7-x
2x-y=8
------
Substitute for "y" and solve for "x":
---
2x -(7-x) = 8
2x + x -7 = 8
3x = 15
x = 5
-----
Solve for "y":
y = 7-x
y = 7-5
y = 2
----------
Solution: (5,2)
=====================
Cheers,
Stan H.
RELATED QUESTIONS
Use Substitution to solve each system of equations. state whether it has no solution or... (answered by Fombitz)
Use Substitution to solve each system of equations. state whether it has no solution or... (answered by ankor@dixie-net.com)
use substitution method to determine whether the system of linear equations has no... (answered by robertb)
use substitution method to determine whether the system of linear equations has no... (answered by mananth)
Please help me with this problem.
Use substitution to solve each system of equation?... (answered by LtAurora)
graph each system of equations. then determine whether the system of equations has one... (answered by rmromero,stanbon)
state whether addition, subtraction substitution would be most convenient to solve each... (answered by checkley79)
Solve each of the system by using either addition or substitution. If a unique solution... (answered by checkley71)
graph each system of equations. then determine whether the system has no solution, one... (answered by stanbon,mananth)
Graph each system of equations using the coordinate plane provided. Then determine... (answered by jim_thompson5910)