<div>Suggested Exam question: Solve&nbsp;<span class="ltx_Math" contenteditable="false" data-equation="28x+39y=1">\(28x+39y=1\)</span>&nbsp;for integers&nbsp;<span class="ltx_Math" contenteditable="false" data-equation="x">\(x\)</span>&nbsp;and&nbsp;<span class="ltx_Math" contenteditable="false" data-equation="y">\(y\)</span>.</div>