Question

Решите уравнение 1) (y+1,6)×(-3)=19,2 2) (x-0,6)×2,5=6 3) (1,8+y)×7=-22,4 4) (2+3)×3,1=12,4 5) (y-1,9)×(-2,4)=12 6) (1,2+x)×(-5)=4

Answer 1

$1) - 3y - 4.8 = 19.2$
$- 3y = 19.2 + 4.8$
$- 3y = 24$
$y = - 8$
$2)2.5x - 1.5 = 6$
$2.5x = 7.5$
$\times = 3$
$3)12.6 + 7y = - 22.4$
$7y = - 22.4 - 12.6$
$7y = - 35$
$y = - 5$
$5) - 2.4y + 4.56 = 12$
$- 2.4y = 16.56$
$y = - 6.9$
$6) - 6 - 5x = 4$
$- 5x = 10$
$x = - 2$
В четвёртом неполное условие