Решите уравнение: 1) -7х + 4х - 8х = -9,9; 3) 1/8х - 2/3х + 1/2х = -5/18; 2) 0,6у - 1,9у - 0,5у = 0,54; 4) -9 5/6 b +

1) -7х + 4х - 8х = -9,9; -11х=-9,9; х=0,9; 2) 0,6у - 1,9у - 0,5у = 0,54; -1,8у=0,54; у=-0,3; 3) 1/8х - 2/3х + 1/2х = -5/18; (3-16+12)/24 х=-5/18; -1/24 х = -5/18; х=-5/18 * (-24/1)=20/3=6 2/3.4) -9 5/6 b + 2 3/4 b + 1 5/12 b = 1 7/27; -6b+(-10+9+5)/12 b=1 7/27; -6b + 1/3b=1 7/27; -5 2/3 b=1 7/27; b=34/27 * (-3/17)=2/9 * (-1/1)=-2/9.