Anna Whistler was asked how old she was

when her son painted her. She replied in
the form of a riddle:
If to my age there added be,
Half of it, a third of it and three times three,
Six score and ten, the sum you’ll see,
So tell me, please, what age I be?
please make it detailed

1 answer

Translated into the universal language of Mathematics:

x + x/2 + x/3 + 9 = 130
11x/6 = 121
x = 66