83.3 Chapter II. Equations of first order and first degree. Exercise II (B) at page 9

83.3.1 problem 1
83.3.2 problem 2
83.3.3 problem 3
83.3.4 problem 4
83.3.5 problem 5
83.3.6 problem 6
83.3.7 problem 7
83.3.8 problem 8
83.3.9 problem 9
83.3.10 problem 10
83.3.11 problem 11
83.3.12 problem 12
83.3.13 problem 13
83.3.14 problem 14
83.3.15 problem 15
83.3.16 problem 16