<PRE><B>Question 172736</B>
Solve these systems by the elimination method.
x + 6y = -41
-x + 9y = 49 
Add the 2 eqns
0x + 15y = 8
y = 8/15
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Sub into eqn 1
x + 6*8/15 = -41
15x + 48 = -615
15x = -663
x = -221/5
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5x + 3y = -13
7x - 2y = 11 
Multiply eqn 1 by 2 and eqn 2 by 3 to get 6y in both.
10x + 6y = -26
21x - 6y = 33
Add the 2 eqns
31x = 7
x = 7/31
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Sub into either to find y.





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