Question

3(0,4y+3)-0,6=8

Допоможіть будьласка

0,6(0,5x+2/3(дріб))=2,25+5,3x

1/6y(0,5+8/9y=1/9y-(1/3-y)

x/3-x/4=2/3

y/4=2y/5-2 1/10​

Answer 1

$1.2y + 9 - 0.6 = 8 \ 1.2y = 8 - 9 + 0.6 \ 1.2y = - 0.4 \ y = - 0.4 div 1.2 \ y = - frac{4}{10} times frac{10}{12} \ y = - frac{1}{3} \ 2)0.6 times (0.5x + frac{2}{3}) = 2.25 + 5.3x \ 0.3x + frac{6}{10} times frac{2}{3} = 2.25 + 5.3x \ 0.3x + 0.4 = 2.25 + 5.3x \ 0.3x - 5.3x = 2.25 - 0.4 \ - 5x = 1.85 \ x = 1.85 div ( - 5) \ x = - 0.37$