Question

помогите срочно плиз

Answer 1

(x:12)*144=3312
(1/12x)*144=3312
1/12x*144=3312
x*12=3312
12x=3312
x=276

Answer 2

144=12*12

x*12*12/12=3312

x*12=3312

x=3312/12=276