2/3 - 3 = 2/3 - 3/1
= 2/3 - (3×3)/(1×3)
= 2/3 - 9/3
= (2-9)/3
= -7/3
= -(2×3+1)/3
= -2 1/3
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4/5
5 there are 5 thirds in 1 and 2/3....there are 3 thirds in the whole (1) and 2 in the 2/thirds
3 there are 6 thirds total, in 2. If you group the thirds in groups of 2 then you will have 3 groups or 6 thirds divided by 2 = 3
(2/3) x (2/3) x (2/3) x (2/3) = (2/3)4 = 16/81
two thirds one and one thirds = 1 + 1/3 = 3/3 + 1/3 = 4/3 4/3 - 2/3 = 2/3