What's the answer for 4a - 13=19

Which property is illustrated by the statement given below? raj raj.

If, while training for a marathon, you ran 60 miles in 2/3 months, how many miles did you run each month? (assume you ran the same amount each month) write your answer as a whole number, proper fraction, or mixed number in simplest form. you ran __ miles each month.

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?