-2x+5=13
you subtract 5 away from +5 and this cancels out.
you then do the same to the other side by taking 5 away from 13 therefor you get 8.
Now you have -2x=8, take -2x and divide it into 8 and you get 4.
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2x + 5 = 31 2x = 31 - 5 = 26 x = 13
(-3, -5)
If your question was 2X + 5 =10. X equals what? Then X=2.5
2x-11
(x - 3)(x + 5)