Question

3 2/45x+1 7/30x=6 1/9

Answer 1

137x/45+37x/30=55/9
домножим 55/9 на 5
(275-137x)/45=37x/30
домножим все равенство на 15
(275-137x)/3=37x/2
550-274x-111x=0
550-385x=0
x=550/385
x=10/7
x=1 3/7

Answer 2

3ц 245х +1ц730 х=6ц 19
3ц245х +1ц 730х = 3ц 490 +1ц 2190 =4ц2590 =4ц 518х 
4ц 518х =6ц19
х = 6ц19 :4ц 518
6ц19 : 4ц518 =559 :7718 =559 x 1877 =107=1ц37
х = 1ц37
6ц 19 = 559
4ц518 =7718

Answer 3

3 215х + 1730х= 3 490 + 5190 =3

Answer 4

3ц 2 45х+1ц 730х =3ц 245 + 1ц 2190 =4ц 2590 =4ц518х

Answer 5

4ц 518х =6ц19 х= 6ц19 : 4ц518 6ц19 : 4ц518=

Answer 6

559 х1877=11077=1ц3377=1ц37

Answer 7

ответ 1ц 37