Leo wasn't a bad student; he was just drowning in . To him, the variables weren't numbers—they were a coded language designed to keep him from ever seeing a football pitch again. "Still stuck on page 142?"

Si por cualquier razón no consigues el solucionario Anaya, estas alternativas te ayudarán:

Muchos institutos tienen ejemplares físicos del solucionario en la biblioteca del departamento de matemáticas. Pregunta a tu profesor si puedes consultarlo en horario de estudio.

Anaya ofrece materiales resueltos para prácticamente todo el currículo, aunque los más buscados suelen ser: Matemáticas Académicas

“Oh, those are real,” she laughed. “If one of my station clocks is slow, I have to recalculate every departure. Eventually, the real time catches up—but the clock shows its own truth.”