3.8 + 2.9 = 6.7
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Nine tenths plus two fifths minus one fourth is equal to 1.05
To add two fractions, we need a common denominator. In this case, the common denominator for 5 and 10 is 10. Therefore, two fifths is equivalent to four tenths, and five tenths remain the same. Adding these together, we get four tenths plus five tenths equals nine tenths.
nine fifths 18/10 = 9/10 + 9/10 18/10 = 9/5
twelve and nine tenths/one hundred and twenty nine over ten/12.9
4/5 is what a half plus three tenths equals.