Решите (3х*3+123)/12=145

(3х*3+123)/12=145 (9х+123)=145*12 9х+123=1740 9х=1740-123 9х=1617 х=179,7 (3*179,7*3+123)/12=145 (1617,3+123)/12=145 1740,3/12=145 145=145