nine tenths
because 1/5 = 2/10
so 7/10 + 2/10 = 9/10
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nine tenths
7/10 (seven tenths) Don't cheat. (:
4/5
You first need to break the question down into fractions that can be added together, thus:-one half = five tenthsone fifth = two tenthsthen do the additionfive tenths + two tenths = seven tenthsSolving 1/2 + 1/5...1/2 = 5/101/5 = 2/105/10 + 2/10 = 7/10
7/10 - 1/5 = 7/10 - 2/10 = 5/10 = 1/2