Question 23
Positive integers $x,y$ satisfy $3x+7y=118$. Find the maximum of $x-y$.
HKIMO 2026 THPT (Grades 10–12 shared) National Preliminary Set 04 Question 23
HKIMO · HKIMO 2026 THPT (Grades 10–12 shared) National Preliminary Set 04
HKIMO · HKIMO 2026 THPT (Grades 10–12 shared) National Preliminary Set 04