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Mathematics, 03.12.2020 06:40 woodpeckerdeejpe8wvh

Please help! For the following system,

3x + y = 8
−x − 2y = −10

if you isolated x in the second equation to use the substitution method, what expression would you substitute into the first equation?
−2y + 10
2y + 10
2y − 10
−2y − 10

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Please help! For the following system,

3x + y = 8
−x − 2y = −10

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