Question

A•12=84 c•14=70 84:икс икс+12•3=50

Answer 1

А•12=84
А=84:12
А=7
7•12=84

Answer 2

a*12=84
a=84:12
a=7

c*14=70
c=70:14
c=5

84:x+12*3=50
84:x+36=50
84:x=50-36
84:x=14
x=84:14
x=6