12×(одна целая 3/4x+5/8)=8 целых 1/2

Question

12×(одна целая 3/4x+5/8)=8 целых 1/2

Answer 1

12•(7/4х+5/8)=17/2
12•7/4х+12•5/8=17/2
21х+15/2=17/2
21х=17/2-15/2
21х=1
х=1/21