i need to find the numbers of this

twice a number minus a second number is -1. twice the second number added to three times the first number is 9. find the two numbers
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1 Answer

line 1: 2x-y=-1....or y=2x+1

line 2: 3x+2y=9

3x+2(2x+1)=9

3x+4x+2=9

7x=7

x=1

y=3
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