SOLUTION: use substitution to solve each system of equations. If the system does not have exactly one solution, state whether it has no solution or infinitely many solutions.
2m+n=1
m-n
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-> SOLUTION: use substitution to solve each system of equations. If the system does not have exactly one solution, state whether it has no solution or infinitely many solutions.
2m+n=1
m-n
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Question 621361: use substitution to solve each system of equations. If the system does not have exactly one solution, state whether it has no solution or infinitely many solutions.
2m+n=1
m-n=8 Answer by dragonwalker(73) (Show Source):
You can put this solution on YOUR website! 2m+n=1
m-n=8
so m=8-n (from second equation)
So put this into first equation:
2(8-n) + n = 1
solve for n:
16 - 2n + n = 1
-n = 1 - 16
-n = -15
so n = 15
To find m:
m=8-n
m=8-15
m= -7
So n=15, m=-7
To check put into 2m+n=1
2(-7) + 15 = 1
-14 + 15 = 1 !!!
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