1) 556-194=362
2)703-427=276
3)362-276=86
5х-3х=4+7
2х=11
х=11/2
х=5,5
-7,1х+9х=-6,6+2,8
1,9х=-3,8
х=-3,8/1,9
х=-2
х+3=0; 3х-7=0
х=-3; х=7/3
3,12х+0,9х=-0,412-2
4,02х=-2,412
х=-0,6
1). 5867:100=58.67... 2). 78.55*2.08=163.384... 3). 51.09*3.4=173.706... 4). 587.7*0.1=58.77... 5) 58.67+163.384=222.054.... 6) 163.384+173.706=337.09...7) 173.706-58.77=115.036... ответ 115.036
1) 12! 5/7-7! 1/6=5! (30/42-7/42)=5! 23/42
2) 7! 1/4-3! 7/15=7! 15/60-3!28/60 =6! 75/60-3!28/60=3! 47/60
3) 9!5/12-6! 2/7=9! 35/84-6! 24/84 =3!11/84
4) 4! 1/6-2! 4/21=4! 7/42-2!8/42= 3!49/42-2! 8/42=1! 41/42
5)5! 9/25- 3! 8/15=5!27/75-3! 40/75 =4! 102/75-3! 40/75=1!62/75
6)4! 3/35-2! 5/14=4! 6/70- 2! 25/70= 3! 76/70-2!25/70=1!51/70
7) 10! 3/8- 4! 2/3=10! 9/24-4! 16/24 =9! 33/24-4! 16/24=5! 17/24
8) 7! 1/16-3! 5/24=7! 3/48- 3! 10/48= =6! 51/48-3! 10/48=3! 41/48