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

Mathematics

2 answers:

olga55 [171]2 years ago

6 0

Answer:

2 and 7/25

Step-by-step explanation:

Trust me dude.

ankoles [38]2 years ago

4 0

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

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

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

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