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Identify the error Denise made when solving the following system of equations using the substitution method.

Identify the error Denise made when solving the following system of equations using the substitution method.
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19 votes
Identify the error Denise made when solving the following system of equations using the substitution method.

Identify the error Denise made when solving the following system of equations using-example-1
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User Pegasis
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7.6k points

1 Answer

5 votes

At second step


\\ \tt\hookrightarrow 2x+2(3x+1)=6


\\ \tt\hookrightarrow 2x+6x+\boxed{2}=6


\\ \tt\hookrightarrow 8x=4


\\ \tt\hookrightarrow x=1/2

answered
User Jan Stanicek
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