1) х : 3/34 = -4 1/4 : ( -2 75/100)
х : 3/34 = -4 1/4 : (-2 3/4)
х : 3/34 = -17/4 * (-4/11)
х : 3/34 = 17/11
х = 17/11 * 3/34
х = 51/374
х = 3/22
2) -3,4х + 5 = -6
-3,4х = -6 - 5
-3,4х = -11
х = -11 : (-3,4)
х = -11 : (-3 4/10)
х = -11 : (-3 2/5)
х = -11 : (-17/5)
х = -11 * (-5/17)
х = 55/17
х = 3 4/17