Final answer:
The student asked for calculations of certain angles, but sufficient context or relationships between the angles were not provided, making it impossible to determine their measures accurately.
Step-by-step explanation:
The student's question involves determining the measure of various angles, but the details about the figure or equations for angles B, 5x+3, and x+2 are missing from the inquiry. Since no further context is provided, it's not possible to calculate the measure of angles based on the info given (m\angle ADC = 53^\circ). With complete information, one would typically look for relationships such as complementary or supplementary angles, use properties of figures like triangles or quadrilaterals, or apply angle-sum identities. Without this information, however, providing a step-by-step calculation for each of the specific angles requested by the student wouldn't be feasible.