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Math·Algebra·Systems of two linear equations in two variables

hard

$$10x+35y=11$$The given equation is one equation in a system of two linear equations. The system has more than one solution. Which of the following equations could be the other equation in the system?

I. $12x+42y=11$
II. $35x+10y=11$

A

I only

B

II only

C

I and II

D

Neither I nor II