<span>7/10</span> - <span>9/100</span> = <span>7·10/10·10</span> - <span>9·1/100·1</span> = <span>70/100</span> - <span>9/100</span> = <span>70 - 9/100</span> = <span>61/<span>100</span></span>
32+40:9=8
68-32:9=4
46+(54:6)=55
84-39:5=9
28+(8*6)=76
Х:73=126
х=126*73
х=9198
46*х=1058
х=1058:46
х=23
6354:х=353
х=6354:353
х=18
х:5006=40
х=5006*40
х=200240
27*х=1998
х=1998:27
х=74
Х+4=3 х=3-4 х=-1
5-х=-7 -х=-7-5 -х=-12 х=12
х+3=-8 х=-8-3 х=-11
10-х=15 -х=15-10 -х=5 х=-5
-х-7=-4 -х=-4+7 -х=3 х=-3
-х-(-7)=2 -х+7=2 -х=2-7 -х=-5 х=5