*1) There are three consecutive integers with a sum of 393. What numbers are these?*

*2) Solve the following equations:*

*a) 18x - 43 = 65*

*b) 23x - 16 = 14 - 17x*

*c) 10y - 5 (1 + y) = 3 (2y - 2) - 20*

*d) x (x + 4) + x (x + 2) = 2x ^{2} + 12*

*e) (x - 5) / 10 + (1-2x) / 5 = (3x) / 4*

*f) 4x (x + 6) - x ^{2} = 5x^{2}*

*3) Determine a real number " The"so that the expressions (3a + 6) / 8 and (2a + 10) / 6 are equal.*

*4) Solve the following equations (in unknown x):*

*a) 5 / x - 2 = 1/4 (x 0)*

*b) 3bx + 6bc = 7bx + 3bc*