Math
posted by Andrew .
2x  y = 4
6x  3y = 7
(a) y = 2x  4
(b)No solution
(c)x = 2, y = 4
(d)x = 2, y = 5/3

Multiply first equation by 3.
6x  3y = 12
6x  3y = 7
Does this make the answer clear?
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