Решите уравнения а) 3-а=5/9, б)х+2 3/7=5 1/7

3 - а = 5/9;- а = 5/9 - 3;- а = 5/9 - 27/9;- а = -22/9;- а * (-1) = -22/9 * (-1);а = 22/9;3 - 22/9 = 5/9;27/9 - 22/9 = 5/9;5/9 = 5/9.х + 2 3/7 = 5 1/7;х + 17/7 = 36/7;х = 36/7 - 17/7;х = 19/7;19/7 + 2 3/7 = 5 1/7;19/7 + 17/7 = 36/7;36/7 = 36/7.