Solve the 2x-y=-2 3x+4y=3 following by inversion method
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2x-y=-2
3x+4y=3
D=2 -1
3 4
=2×4-3×-1
=8+3
=11
Dx=-2 -1
3 4
=-2×4-3×-1
=-8+3
=-5
dy = 2 -2
3 3
=2×3-3×-2
=6+6
=12
x=dx/d
=-5/11
y=dy/d
=12/11
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