[tex]15.(3) = \frac{153 - 15}{9} = \frac{138}{9} [/tex]
[tex]25.91 = \frac{2591}{100} [/tex]
[tex]2.3(3) = \frac{233 - 23}{90} = \frac{210}{90} [/tex]
[tex]18.(6) = \frac{186 - 18}{9} = \frac{168}{9} [/tex]
