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Natali [406]
3 years ago
15

For the following system, if you isolated x in the second equation to use the substitution method, what expression would you sub

stitute into the first equation?
3x + y = 8
−x − 2y = −10

A.) −2y + 10
B.) 2y + 10
C.) 2y − 10
D.) −2y − 10
Mathematics
1 answer:
oksano4ka [1.4K]3 years ago
3 0

Answer:

A.) −2y + 10

Step-by-step explanation:

−x − 2y = −10

Add 2y to both sides.

-x = 2y - 10

Multiply both sides by -1.

x = -2y + 10

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