Question

elimination question
3x+7y=2
6x-5y=4
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Answer 1

Answer:

$3x + 7y = 2 \: \: .........(1) \\ 6x - 5y = 4 \: \: .........(2) \\ \\ (1) \times 2 = 6x + 14y = 4 \: .....(3) \\ \\ \\ 6x + 14y = 4 \: \: .....(3) \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: - \\ 6x - 5y = 4 \: \: .....(2) \\ \\ \\ (3) - (2) = )19y = 0 \\ y = 0 \\ sub. \: y = 0 \: in \: (1) \\ = )3x = 2 \\ = )x = \frac{2}{3}$

x= 2/3 and y=0