Answer :
[tex]\bigstar\bf\:89\times (100-2)=98\times (100-x)[/tex]
[tex]:\implies\tt\:89\times 98=98\times (100-x)[/tex]
[tex]:\implies\tt\:100-x=\dfrac{89\times 98}{98}[/tex]
[tex]:\implies\tt\:100-x=89[/tex]
[tex]:\implies\tt\:x=100-89[/tex]
[tex]:\implies\boxed{\bf{\gray{x=11}}}[/tex]
