Question

Решите уравнения
4(3-2x)+24=2(3+2x)
0,2(5y-2)=0,3(2y-1)-0,9

Answer 1

$4(3 - 2x) + 24 = 2(3 + 2x) \ 12 - 8x + 24 = 6 + 4x \ - 8x + 36 = 6 + 4x \ - 8x - 4x = 6 - 36 \ - 12x = - 30 \ x = frac{ - 30}{ - 12} \ x = frac{5}{2} \ x = 2.5$
$0.2(5y - 2) = 0.3(2y - 1) - 0.9 \ y - 0.4 = 0.6y - 0.3 - 0.9 \ y - 0.4 = 0.6y - 1.2 \ y - 0.6y = - 1.2 + 0.4 \ 0.4y = - 0.8 \ y = - 0.8 div 0.4 \ y = - 8div 4 \ y = - 2$