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Sauron [17]
3 years ago
8

X+10y-z+2x-3y+z what is the answer

Mathematics
2 answers:
DaniilM [7]3 years ago
7 0
x+10y-z+2x-3y+z
=x+2x+10y-3y+z-z (positive and negative 'z' will cut)
=3x+7y
kari74 [83]3 years ago
3 0
You have to add/subtract all the common variables the answer is 3x+7y
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Answer:

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Step-by-step explanation:

The best way to do this is to put - 3x in for y in the second equation.

4x - 2(-3x) = - 20        Watch the signs. You have 2 minus signs.

4x - - 6x = -20            Change - - 6x to 6x

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x = -20/10

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