No, You cannot do MCA after B.Com without maths in 10 +2.

If you are keen to do only MCA after your B.Com , you have to appear for open board examination in Mathematics or complete 1 year diploma in PGDCA to be eligible for doing MCA.

To know more about this course check on the following link,

"MCA: Full Form, Courses, Admission Process, Subjects, Fees, Career Options | Careers360" https://www.careers360.com/courses/mca-master-of-computer-applications

Hope this helps you.