Question

For simultaneous equations in
variables x and y, Dx = -64, Dy = 48, D
= -8 then what is x?​

Answer 1

X = Dx/D = -64/(-8)=8

Answer 2

Answer:

$dx = - 64 \\ dy = 48 \\ d = - 8 \\ - 8x = - 64 \\ x = - 64 \div - 8 \\ x = 8 \\ dy = - 64 \\ - 8y = 48\\ y = 48 \div - 8 \\ y = - 6$

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