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Day 4: The Art of Substitution | Secondary Stage | Apex Institute of Maths and Sciences

Day 4: The Art of Substitution ๐Ÿ•ต๏ธโ€โ™€๏ธ๐Ÿงฉ Secondary Stage (Grades 9 & 10) | Apex Institute of Maths and Sciences ๐ŸŽฏ 1. Concept: Systems of Equations Welcome to Day 4! Until now, we have solved for just one unknown variable (like finding ‘x’). But what if a mystery has TWO unknownsโ€”like trying to find the […]

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