3 3/14-1 2/7=1 7/8х
45/14-9/7=1 7/8х
45/14-18/14=1 7/8х
27/14=15/8х
х=27/14:15/8
х=27/14*8/15=108/105=1 3/105= 1 1/35
ответ 1 1/35
5/16x+2 3/4=6 1/8
5/16x=6 1/8- 2 3/4
5/16 х= 49/8-11/4=49/8-22/8=27/8
5/16х=27/8
х=27/8:5/16=27/8*16/5=54/5=10 4/5
ответ 10 4/5
0,73-0,3+9,6=10,03x
10,03x*21=210,62x
10,03x*100=1003x
10,03x*0,01=0,1003x
1)4 2/9*2 4/7+1 2/9*2 4/7= 38/9 * 18/7 + 11/9 * 18/7 = 38/1 * 2/7 + 11/1 * 2/7 = 76/7 + 22/7 = 98/7 = 14
<span>2)2 5/6*6 2/3+3/10*6 2/3_6 2/3*1 1/3= 17/6 * 20/3 + 3/10 * 20/3 - 20/3 * 4/3 = 17/3 * 10/3 + 1/1 * 2/1 - 80/9 = 170/9 + 2 - 80/9 = 170/9 + 18/9 - 80/9 = 108/9 = 12</span>