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(-1, 3)

Q: 2x plus y equals 1 2x - y equals -5?

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NM equals 2x + 1, as stated in the question!

4x + 1 = 2x + 5 4x + 1 - 2x = 2x + 5 - 2x 2x + 1 = 5 2x + 1 - 1 = 5 - 1 2x = 4 2x/2 = 4/2 x = 2

x equals 4

2x + 1 = 6 2x = 5 x = 5/2 or 2.5

2x+5=3x+1 -x=-4 x=4

If: x+1+2x = 1x+5 Then: x = 2

5 - 2x = 8 x = -1 and 1/2 4x = 6 x = 6/4 or 3/2

Because all the terms have been divided by -1

That's not real clear. It could be 2 times positive 1 (which is 2) plus 5, which equals 7. It could be 2x + 1 + 5 which equals 2x + 6 It could be 2x + 1 = 5, in which case x = 2

2x+y=1

(5, 1)

(-1, 5)