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B) y/4 - 2x/3 = 2
Despejo y en B:
C) y = (2 + 2x/3) × 4
Reemplazo C en A:
x/3 + 2[(2 + 2x/3) × 4] = -2
x/3 + 2( 8 + 2x/3 ) = -2
x/3 + 16 + 2x/3 = -2
x = -18
Reemplazando x en C
y = [2 + 2(-18)/3] × 4
y = (2 - 32/3) × 4
y = (2 - 8) × 4
y = -6 × 4
y = -24
entonces
x = -18
y = -24