197. Решите уравнение: 1) -8x = 72; 2) 0,9x = -5,4; 3) -1,7x = -5,1; 4) 1/9 x = -8/27; 5) -2/7 x = -1/6; 6) -3 4/7 x = 25/28.

**197. Решите уравнение:** **1) -8x = 72** x = 72 / (-8) x = -9 **2) 0,9x = -5,4** x = -5,4 / 0,9 x = -6 **3) -1,7x = -5,1** x = -5,1 / (-1,7) x = 3 **4) 1/9 x = -8/27** x = -8/27 / (1/9) x = -8/27 * 9/1 x = -8/3 **5) -2/7 x = -1/6** x = -1/6 / (-2/7) x = -1/6 * -7/2 x = 7/12 **6) -3 4/7 x = 25/28** -25/7 x = 25/28 x = 25/28 / (-25/7) x = 25/28 * -7/25 x = -1/4