SOLUTION: I need hep please! Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this please.
-3x - 5y = 61
7x - 5
Algebra.Com
Question 615086: I need hep please! Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this please.
-3x - 5y = 61
7x - 5y = -9
Found 3 solutions by stanbon, scott8148, josmiceli:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
-3x - 5y = 61
7x - 5y = -9
-----
Subtract to get:
10x = -70
x = -7
----
Solve for "y":
7x - 5y = -9
7*-7 - 5y = -9
-49 - 5y = -9
5y = -49+9
5y = -40
y = -8
-------
Solution: (-7.-8)
=====================
Cheers,
Stan H.
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Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
subtracting the equations (to eliminate the y-terms) ___ -10x = 70
solve for x, then substitute back to find y
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
(1)
(2)
Multiply both sides of (2) by
and add the equations
(1)
(2)
Divide both sides by
Plug this result back into either equation
(2)
(2)
Multiply both sides by
(2)
(2)
(2)
(2)
The solution is (-7,-8)
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