Question

If 4x + 3y = 11 and 3x + 2y = 8, then (x,y) is

A) 2, 0 B) 1, 6 C) 2, 1 D) 5, 6

Answer 1

Answer:

$(4x + 3y = 11) \times 3 \\ (3x + 2y = 8) \times 4 \\ - - - - - - - - - \\9y - 8y = 33 - 32 \\ \\ \\ y = 1 \\ \\ \\ 3x + 2y = 8 \\ put \: .y = 1 \\ 3x + 2 \times 1 = 8 \\ \\ 3x + 2 = 8 \\ \\ 3x = 6 \\ \\ x = 2$

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