(0.2^-1 - 0.4^-1) : (3 * 0.1^-1 +0.3^-1) решите. Created by NadyaTsikalo. matematika-ru

(0.2^-1 - 0.4^-1) : (3 * 0.1^-1 +0.3^-1) решите...

NadyaTsikalo @NadyaTsikalo

September 2021 1 14 Report

(0.2^-1 - 0.4^-1) : (3 * 0.1^-1 +0.3^-1)
решите

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kirichekov

Verified answer

$(0,2 ^{-1}-0,4 ^{-1} ):(3* 0,1^{-1} +0,3^{-1} )=$
$=(( \frac{2}{10} )^{-1}-( \frac{4}{10} ) ^{-1} ):(3*(\frac{1}{10} ) ^{-1}+( \frac{3}{10} ) ^{-1} )=(5- \frac{10}{4} ):(30+ \frac{10}{3} )=$
$= \frac{10}{4} : \frac{100}{3} = \frac{30}{400} =0,75$

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