SOLUTION: 1/2x+3/5y=-1 3/4x-7/10y=13/2 solve by any method
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Question 997586
:
1/2x+3/5y=-1
3/4x-7/10y=13/2
solve by any method
Answer by
Alan3354(69443)
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1/2x+3/5y=-1 times 30 --> 15x + 18y = -30
3/4x-7/10y=13/2 times 20 --> 15x - 14y = 130
----------------------
15x + 18y = -30
15x - 14y = 130
--------------------- Subtract
32y = -160
etc