Respuesta :
Explicación paso a paso:
A: 2y=28
y = 28/2
y = 14
B: 3z=-12
z = -12/3
z = -4
C: 12x=8
12/8 = x
1.5 = x
D: -3x=21
x = 21/-3
x = 7
E: -y=-25
y= -25
F: 4y=5
y = 5/4
y = 1.25
G: 2-x = 8-3
x = 8-3+2
x = 7
H: 1-x = -8-2
x = -8-2-1
x = -11
Explicación paso a paso:
A: 2y=28
y = 28/2
y = 14
B: 3z=-12
z = -12/3
z = -4
C: 12x=8
12/8 = x
1.5 = x
D: -3x=21
x = 21/-3
x = 7
E: -y=-25
y= -25
F: 4y=5
y = 5/4
y = 1.25
G: 2-x = 8-3
x = 8-3+2
x = 7
H: 1-x = -8-2
x = -8-2-1
x = -11