div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imagea href=https:reader040fdocumentsinreader040viewer20220308105b1a0b177f8b9a37258d2eafhtml5page1jpg target=_blank img data-url=documentwebmathsunsweduauwebmathsunsweduaujim-chapter-3-example-2-prove-thathtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: webmathsunsweduauwebmathsunsweduau~jimproofsch3pdf28 Chapter 3 Example 2 Prove that a whole number is divisible by 9 if and only if the sum of its digits is divisible by loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader040fdocumentsinreader040viewer20220308105b1a0b177f8b9a37258d2eafhtml5thumbnails1jpg width=140 height=200 adivdivdiv class=trans-pagebutton class=gotoPage data-page=2Page 2button div class=trans-imagea href=https:reader040fdocumentsinreader040viewer20220308105b1a0b177f8b9a37258d2eafhtml5page2jpg target=_blank img data-url=documentwebmathsunsweduauwebmathsunsweduaujim-chapter-3-example-2-prove-thathtmlpage=2 data-page=2 class=trans-thumb lazyload alt=Page 2: webmathsunsweduauwebmathsunsweduau~jimproofsch3pdf28 Chapter 3 Example 2 Prove that a whole number is divisible by 9 if and only if the sum of its digits is divisible by loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader040fdocumentsinreader040viewer20220308105b1a0b177f8b9a37258d2eafhtml5thumbnails2jpg width=140 height=200 adivdivdiv class=trans-pagebutton class=gotoPage data-page=3Page 3button div class=trans-imagea href=https:reader040fdocumentsinreader040viewer20220308105b1a0b177f8b9a37258d2eafhtml5page3jpg target=_blank img data-url=documentwebmathsunsweduauwebmathsunsweduaujim-chapter-3-example-2-prove-thathtmlpage=3 data-page=3 class=trans-thumb lazyload alt=Page 3: webmathsunsweduauwebmathsunsweduau~jimproofsch3pdf28 Chapter 3 Example 2 Prove that a...