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3x + y = -21 x+y=-5 solving systems of equations by substitution

3x + y = -21 x+y=-5 solving systems of equations by substitution
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1 vote
3x + y = -21
x+y=-5
solving systems of equations by substitution

User Avall
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1 Answer

6 votes
First : x=-5-y and then put x in the phrase above
User Ilyes Kooli
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