Question

What is 1 1/5 * 2 2/5 - 3/5 because I don't understand lol

Answer 1

let's firstly convert the mixed fractions to improper fractions, also recall PEMDAS, multiplication is done before any additions or subtractions.

`\bf \stackrel{mixed}{1(1)/(5)}\implies \cfrac{1\cdot 5+1}{5}\implies \stackrel{improper}{\cfrac{6}{5}}~\hfill \stackrel{mixed}{2(2)/(5)}\implies \cfrac{2\cdot 5+2}{5}\implies \stackrel{improper}{\cfrac{12}{5}} \\\\[-0.35em] ~\dotfill`

`\bf \stackrel{\mathbb{P~E~M~D~A~S}}{\cfrac{6}{5}\cdot \cfrac{12}{5}-\cfrac{3}{5}}\implies \cfrac{6\cdot 12}{5\cdot 5}-\cfrac{3}{5}\implies \cfrac{72}{25}-\cfrac{3}{5}\implies \stackrel{\textit{using the LCD of 25}}{\cfrac{(1)72~~-~~(5)3}{25}} \\\\\\ \cfrac{72-15}{25}\implies \cfrac{57}{25}\implies 2(7)/(25)`

Answer 2

2 and 7/25

Explanation:

Trust me dude.