Mathematics

Bruno Friedman

2 November, 15:26

Solve these systems of equations.

1.

{2x-y=11

{5x-y=10

x=? y=?

2.

{x+2y=25

{-x+7y=56

x=? y=?

3.

{3x-2y=7

{x+2y=13

x=? y=?

+4

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