first we need to find a common denominator
[latex] \frac{2}{10} [/latex]=[latex] \frac{20}{100} [/latex]
now we can add them
[latex] \frac{20}{100} [/latex]+[latex] \frac{9}{100} [/latex]=[latex] \frac{29}{100} [/latex]

nylanmckenzie

convert 2/10 to 20/100 then add 20/100+9/100 to get you answer of 29/100 also written as .29
i converted 2/10 to 20/100 by multiplying the numerator and denominator by ten