Question

помогите мне! очень нужно

Answer 1

$frac{left(0,54:1,35+frac35:2frac14+left(-frac16right)right)cdot4}{left(1,75+frac15right):left(-2frac35right)}\left(0,54:1,35+frac35:2frac14+left(-frac16right)right)cdot4=left(frac{54}{100}:frac{135}{100}+frac35:frac94-frac16right)cdot4=\=left(frac{54}{100}cdotfrac{100}{135}+frac35cdotfrac49-frac16right)cdot4=left(frac25+frac4{15}-frac16right)cdot4=frac{12+8-5}{30}cdot4=frac{15}{30}cdot4=2$
$left(1,75+frac15right):left(-2frac35right)=-left(1frac34+frac15right):2frac35=-left(frac74+frac15right):frac{13}5=\=-frac{35+4}{20}cdotfrac5{13}=-frac{39}{20}cdotfrac5{13}=-frac34\frac{left(0,54:1,35+frac35:2frac14+left(-frac16right)right)cdot4}{left(1,75+frac15right):left(-2frac35right)}=2:left(-frac34right)=-2:frac34=-2cdotfrac43=-frac83=-2frac23$