r + (-12) = 19 can someone please help me i dont understand this problem

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r + (-12) = 19 can someone please help me i dont understand this problem

Mathematics
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help me after
you can rewrite it first then undo
r - 12 = 19 now undo -12 by adding 12 to both sides

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Other answers:

so r = 19+12 then plug value back in original equation to check
p + (-9) = -9 now what about this problem can you help me with it please
adding a negative is same as subtracting a positive
same concept change to p-9=-9
undo -9 by adding 9 to both sides to keep the equation "balanced"-whatever you do to one side, you must do to the other
so what would r = ?
9 i think
well what is -9 + 9
r = 31
no!
oh ok i am a little slow so
they are opposites...when you add a number and its opposite you get 0
r definitely equals 31.
its ok...math takes time ; )
p=0
yes for original problem : ) we are working another
oh i see.
I'm trying to show process then answer so chill ; )
Have at it.
thanks ; )
p + (-9) = -9 p-9 = -9 + 9 +9 p=0 check: 0 + (-9) = -9 -9=-9

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