SOLUTION: how do you slove ts question usingthe sub method
6x+14y=54
3x+5y=30
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Question 716459: how do you slove ts question usingthe sub method
6x+14y=54
3x+5y=30
Found 2 solutions by stanbon, josmiceli:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
6x+14y=54
3x+5y=30
----
Solve the bottom equation for "y":
y = (30-3x)/5
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Substitute for "y" in the top equation and solve for "x":
6x + 14[(6-(3/5)x)] = 54
-------
6x + 84 - (42/5)x = 54
6x - (42/5)x = -30
(30/5)x - (42/5)x = -30
(-12/5)x = -30
-------
-12x = -150
x = 12.5
=================
Cheers,
Stan H.
=================
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Subtraction method?
Multiply both sides of (2) by
and subtract (2) from (1)
Substitute this result back into (1) or (2)
------------
check the answers:
OK
You can check the other equation
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