Respuesta:
Explicación paso a paso:
a) 3x - 5 = 13
3x = 18
x = 6
b) 4x + 3 = -13
4x = -16
x = -4
c) x/3 = 5
x = 15
d) x/2 - 3 = 15
x/2 = 18
x/2 = 36
e) x^2 = 121
x = 11
f) x^2 - 4 = 21
x^2 = 25
x = 5
