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determine the best method to solve the system of equations, then solve the system
x =2y -1
3x - 3y = 9

Answer :

first you need to rearrange the equation so both numbers are on the same side :
x - 2y = -1
3x - 3y = 9

then times to mark out x or y

3x -6y = -3
3x -3y = 9

then minus them

-3y = -12
y = 4 x = 7

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