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Well well well... this is a toughy.....first i guess you would have to add 9 and 4....hmm lets count it up...1 2 3 5 7 5 7 9 45 10 1002130 1 2 and 3... so the answer is obviously 3 tenths!

Q: What is 4 tenths plus 9 tenths?

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9/10 or 0.9

9 tenths

It is 1 1/30.

It works out at 9 tenths, or 0.9 in decimal.

It is: 7 tenths

4/5 + 7/10 + 9/10 = 8/10 + 7/10 + 9/10 =24/10 or 2.4

8 tenths plus 1 third = 9

7/10 + 11/10 = 18/10 = 9/5 = 1 4/5

2 and 7 tenths

¹/₁⁵ ⁺ ⁹/₁₀ =²/₃₀ ⁺ ²⁷/₃₀ = ²⁹/₃₀