Question

Упростите выражение: (2,7x+3,1)×2-10(0,1x+0,08)

Answer 1

(2,7x+3,1)×2-10(0,1x+0,08)

$( \frac{27}{10} + \frac{31}{10} )*2-10( \frac{1}{10} x+ \frac{2}{25} )= \\ \\ =2( \frac{27}{10}x+ \frac{31}{10}-5( \frac{1}{10}x+ \frac{2}{25} )=2( \frac{27}{10}x+ \frac{31}{10}- \frac{1}{2}x- \frac{2}{5})=2( \frac{11}{5}x+ \frac{27}{10})= \\ \\ 2* \frac{1}{10}(22x+27)= \frac{1}{5} (22x+27)$