Question

Решите уравнение: 1)-3y-9y+5y=2.1 2)-2.4m+3.8m+1.2m=-0.052 3)-3/7a+5/6a-8/21a=-1/49 4)-8 7/16c+10 19/24c-3 3/8c=-3 1/16 5)2.3x-(-7.2)*x+x*(-1.5)=-2.4 6)3.4y+y*(-8.1)-(-2.2)*y=-10

Answer 1

$- 7y = 2.1 \\ y = - 0.3$

$2.6m = - 0.052 \\ m = - 0.02$

$3.4y - 8.1y + 2.2y = - 10 \\ - 2.5y = - 10 \\ y = 4$