23 2/5+х=4 5/6+21 1/6х+19 3/7=5 7/12+ 16 5/12х+6 1/4=17 2/3-5 2/34 3/8+х=21 2/5-12 2/5решите уравнения

23 2/5+х=4 5/6+21 1/6 х= (29/6+127/6)-117/5 х=78/3-117/5 х=390/15-351/15 х=39/15=13/5=2 3/5 х+19 3/7=5 7/12+ 16 5/12 х= (67/12+197/12)-136/7 х= 264/12-136/7 х= 22-136/7 х= 154/7-136/7 х=18/7 х+6 1/4=17 2/3-5 2/3 х= 12-25/4 х=48/4-25/4 х=23/4=5 3/4 4 3/8+х=21 2/5-12 2/5 х= 9- 35/8 х= 72/8-35/8 х= 37/8= 4 5/8