Respuesta :

Answer:

(6,-3)

Explanation:

by direct substitution, y=3-x in 2x-3y=21

2x-3(3-x)=21

5x-9=21

x=6

then y=3-6

y=-3

Answer:

x=6

Explanation:

2x-3(3-x)=21

2x-9+3x=21

2x+3x=30

5x=30

x=6

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