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Respuesta:
6x-7=2x+5= x=3
4x-3=-12x+5= x=0,5
4(2y+5=3(5y-2)= y = 26/7
-11x+12=144= x=-12
-8x-15=-111= -8x-15=-111-8x=-111+15-8x=-96x=-96/-8x=12