Question

what is the value of Dx for the simultaneous equation 3x+2y+11=0 and 7x-4y=9?
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Answer 1

Answer:

Dx=

$| - 11 \: \: \: \: \: \: \: \: \:9 | \\ |2 \: \: \: \: \: \: \: \: \: \: - 4|$

-11×-4-9×2

44-18

26