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c = cuadernos
Plantemiento.
6h + 5c = 370
h + 2c = 120
Despeje h
h = 120 - 2c
Sustitucion.
6(120 - 2c) + 5c = 370
Algebra.
720 - 12c + 5c = 370
-7c = 370 - 720
-7c = -350
c = 50
Por lo tanto h = 20
Respuesta
Paquete de hojas $20
Cuaderno $50