3 years ago

Х - Зу = 72х - бу = 12need help.solving systems by elimination.

1 answer:

Zanzabum3 years ago

6 0

{x - 3y = 7 | · (-2)

{2x - 6y = 12

{-2x + 6y = -14

{2x - 6y = 12 (+)

---------------------------------------

-2x + 2x + 6y + (-6y) = -14 + 12

0 = -2

contradiction

x, y ∈ ∅

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Х - Зу = 72х - бу = 12need help.solving systems by elimination.​