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Mathematics, 13.10.2019 19:00 floressavanna15

If you were to solve the following system by substitution, what would be the best variable to solve fro and from what equation?
3x+6y=9
2x-10y=13

a) y, in the second equation
b) y, in the first equation
c) x, in the first equation
d) x, in the second equation

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